The Salvation
The Salvation
A compact philosophical summa of logic, nature, soul, and metaphysics.
About this book
The Salvation distills Avicenna's larger philosophical project into a more accessible architecture. It moves through logic, natural philosophy, psychology, and metaphysics, showing how careful reasoning can rise from the structure of thought to the structure of being. The book matters because it lets readers see Avicenna not only as a physician, but as a systematic philosopher shaping centuries of Islamic, Jewish, and Christian thought.
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- On Logic932 words
In this chapter, we explore the foundational distinction between conception and assent, and how each is acquired through definition or syllogism. Logic emerges as the essential tool for distinguishing correct reasoning from error, much like grammar for speech.
- The Individual Single Word614 words
This chapter examines the distinction between singular particular expressions and universal terms, focusing on what makes a predicate essential to a subject.
- What Is Said in Answer to What It Is360 words
This chapter untangles a knot in logic: distinguishing essential predicates that define what something is from those that don't. It challenges common interpretations and offers a refined view based on the totality of essential attributes.
- What Is Said in Answer to What Kind It Is379 words
This chapter explores how we distinguish things by their essential traits. It introduces the five universal terms that form the backbone of logical classification.
- Species319 words
This chapter sharpens the tools of definition by distinguishing species from differentia. It explains how each universal answers a different question, laying the groundwork for precise classification.
- Property333 words
This chapter examines the nature of specific properties and general accidents, distinguishing essential from accidental universals. It also explores the relationship between entities, mental concepts, utterances, and writings.
- The Name279 words
In this chapter, we explore the foundational categories of Arabic grammar: noun, verb, and particle. The focus is on how each type of word functions in isolation and in combination to form meaningful statements.
- Categorical Propositions268 words
This chapter introduces the building blocks of logic: categorical and conditional propositions. It defines each type and provides clear examples, setting the stage for understanding how propositions relate to one another.
- Disjunctive Conditional Propositions351 words
This chapter explores key logical concepts: disjunctive conditionals, negation, and the roles of subject and predicate. It also introduces particular and indefinite propositions, setting the stage for deeper analysis.
- Quantified Propositions244 words
This chapter lays out the four types of categorical propositions: universal affirmative, universal negative, particular affirmative, and particular negative. Each is defined with examples to clarify how they apply to universal or partial subjects.
- Quantifiers357 words
This chapter explores the building blocks of logical propositions, from quantifiers to the necessary, impossible, and possible matters that define truth conditions.
- Privative and Simple Propositions575 words
This chapter delves into the nuances of modified propositions, distinguishing them from simple ones. It examines how negation and affirmation operate within these logical structures, setting the stage for a detailed comparison.
- Negative Propositions357 words
This chapter defines negative propositions and introduces the three modalities: necessary, impossible, and possible. It distinguishes modality from matter and explains how to negate four-part modal propositions.
- Possibility and Its Meaning1016 words
This chapter clarifies a subtle ambiguity in the concept of possibility that often leads to confusion. By distinguishing between common and technical usage, it sets the stage for resolving paradoxes about necessity and impossibility.
- Necessity and Impossibility950 words
This chapter explores the six kinds of necessary predication and their logical relationships with necessity, impossibility, and possibility. The discussion builds on earlier distinctions, preparing the reader for a detailed classification.
- Premise and Definition1120 words
This chapter turns to the foundations of logical premises, examining how absolute, necessary, and possible propositions are defined and distinguished.
- Possible Things381 words
In this chapter, Avicenna examines the nature of possibility and necessity in modal logic, distinguishing between common and technical meanings. The discussion clarifies how negations of possibility and necessity interact, setting the stage for a deeper exploration of logical fallacies.
- Opposed Propositions454 words
This chapter examines the precise conditions under which two propositions truly oppose each other, distinguishing between contradiction and contrariety. It lays out the logical requirements for opposition, setting the stage for a deeper analysis of truth and falsehood in categorical statements.
- Conversion of Absolute Propositions1000 words
This chapter examines the rules of conversion in categorical logic, focusing on when absolute and necessary propositions can be swapped. It builds on earlier distinctions to clarify the conditions that make conversion valid or invalid.
- Conversion of Possible Propositions505 words
In this chapter, we explore the conversion rules for modal propositions, focusing on the universal negative and affirmative possible statements. The discussion challenges common assumptions and reveals subtle distinctions between true and common possibility.
- Syllogism344 words
This chapter defines the syllogism and its key properties. It distinguishes complete from incomplete syllogisms, then introduces the division into conjunctive and exceptive types. The text lays the groundwork for understanding logical inference.
- Parts and Figures of Categorical Syllogisms1867 words
This chapter explores the three figures of categorical syllogisms, detailing their valid moods and methods of proof. The focus is on the conditions that govern each figure and how they produce conclusions.
- Composition from Necessary Premises444 words
This chapter examines modal syllogisms with necessary premises, comparing them to absolute ones. It focuses on difficulties in proof by reductio and supposition when mixing necessary and possible premises.
- Mixing Absolute and Necessary Premises in the First Figure549 words
This chapter explores the mixing of absolute and necessary propositions in syllogisms, focusing on how modality flows in the first and second figures.
- Mixing Them in the Third Figure437 words
In this chapter, we examine the third figure's modal syllogisms and the debate over which premise governs necessity. The discussion then shifts to the first figure with two possible premises, revealing how negative possibilities can be handled.
- Mixing Possible and Absolute Premises in the First Figure616 words
This chapter explores the logical consequences of mixing possible and absolute premises in the first figure, focusing on when the conclusion remains possible or becomes necessary.
- Mixing Possible and Necessary Premises in the First Figure431 words
This chapter tackles a knotty problem in modal logic: how possibility and necessity interact in the first figure of the syllogism. The discussion navigates between received views and deeper analysis, setting the stage for a surprising conclusion.
- Two Possible Premises in the Second Figure380 words
This chapter explores the second figure's syllogisms when mixing possible and absolute premises. It challenges common assumptions and examines conditions under which a conclusion may or may not follow.
- Mixing Possible and Necessary Premises in the Second Figure504 words
This chapter examines logical mixtures involving possibility and necessity in the second and third figures, building on earlier distinctions. The focus is on how conclusions change when premises mix modalities, with some claims challenging standard views.
- Mixing Possible and Necessary Premises in the Third Figure919 words
This chapter explores the mixing of possible and necessary premises in the third figure, then transitions to conditional propositions, covering their structure, quantification, and types.
- Categorical Syllogisms from Connected Conditionals132 words
This chapter explores how conditional propositions combine in logical conjunctions. It identifies three patterns of connection based on shared or swapped antecedents and consequents.
- Categorical Syllogisms from Disjunctive Conditionals1434 words
This chapter explores how conditional and disjunctive propositions combine in syllogisms across different figures. Understanding these combinations requires attention to the conditions that ensure valid reasoning.
- Hypothetical Syllogism510 words
This chapter explores the rules of exceptive syllogisms, focusing on how conditional premises yield conclusions through affirming or denying parts. The discussion covers both conjunctive and disjunctive conditionals, setting the stage for understanding valid inference patterns.
- Composite Syllogisms338 words
Compound syllogisms build arguments by linking conclusions as premises. This chapter explores their structure, from continuous chains to conditional forms, without yet revealing the full logical implications.
- Acquiring Premises524 words
This chapter explores two essential logical skills: how to gather premises for a syllogism and how to analyze a completed syllogism into its parts. The methods involve careful attention to terms and their relations.
- Establishing Results That Follow the First Question442 words
This chapter explores how conclusions relate to their converses and how false premises can sometimes yield true conclusions. It examines the conditions under which truth emerges from falsehood in syllogisms.
- Circular Demonstration419 words
This chapter examines the syllogism of conversion, a method for deriving premises from a conclusion and its converse. It explores the conditions under which such conversion is valid, focusing on affirmative and negative cases.
- Reversal of the Syllogism566 words
This chapter explores two powerful logical tools: inversion of syllogism and reductio ad absurdum. Both involve manipulating premises and conclusions to reveal hidden truths or expose contradictions.
- Syllogism from Opposed Premises1002 words
This chapter explores three logical puzzles: contradictory syllogisms, begging the question, and simultaneous knowledge and ignorance. Each reveals how language and reasoning can deceive or confuse.
- Analogy425 words
This chapter examines analogy and the enthymeme as forms of reasoning. It defines analogy as transferring a judgment from one specific case to another based on a shared universal meaning.
- Indication594 words
This chapter explores three types of enthymematic syllogisms: proof, relation, and physiognomic syllogism. Each uses a middle term differently to draw conclusions, revealing subtle logical structures in everyday reasoning.
- Conception and Assent404 words
This chapter explores the foundations of knowledge, distinguishing between conception and assent, and how they are acquired through syllogism and definition. It then introduces perceptibles and empirically known things as primary sources of assent.
- Reports Transmitted by Many1164 words
This chapter explores how we come to believe certain propositions-through testimony, imagination, or social custom. It distinguishes between innate and acquired beliefs, preparing the reader for a nuanced discussion of truth and error.
- Probable Judgments315 words
In this chapter, we explore how beliefs can be held with varying degrees of certainty. The discussion distinguishes between conjectural opinions and convictions, and introduces imaginative propositions that influence emotions.
- First Principles898 words
This chapter explores how the mind grasps primary propositions and the role of sense, imagination, and intellect in forming knowledge. It sets the stage for a deeper look at demonstration and certainty.
- The Demonstration of the Present Fact197 words
This chapter explores a specific type of demonstration that reveals how we come to believe a conclusion, without proving the reality behind it. It distinguishes between mental assent and actual causation.
- The Question Whether235 words
This chapter breaks down the two fundamental types of inquiry: one about existence or nonexistence, the other about definition or essence. Each type has its own subdivisions and purposes, setting the stage for how we seek knowledge.
- The Meaning of Which135 words
This chapter explores the relationship between two modes of inquiry, 'what' and 'whether,' and introduces the foundational components of demonstrations: subjects, problems, and premises.
- Premises of Demonstrations284 words
This chapter examines the foundational premises of demonstrations, focusing on their truth, certainty, and essential nature. It introduces two types of essential predication, setting the stage for a deeper analysis of logical structures.
- The Primary Premise527 words
This chapter clarifies two senses of 'primary proposition' and redefines 'predicated of all' for demonstrative science. The discussion sharpens the conditions for universal premises, distinguishing them from earlier logical usage.
- The Appropriate Middle Term175 words
This chapter examines what makes scientific premises appropriate, arguing they must belong to the same or a related science. The discussion focuses on essential predicates and the causal link between premises and conclusions.
- Subjects694 words
This chapter explores the foundations of scientific inquiry, examining how subjects and their essential attributes shape the structure of knowledge. It distinguishes between the matters that sciences investigate and the problems they seek to demonstrate.
- Principles Known Before Demonstrations278 words
This chapter sets the stage for understanding the foundational principles of any science. It distinguishes three types of first principles that must be grasped before demonstrations can proceed.
- Premises919 words
In this chapter, we explore how sciences relate to one another-through shared premises, classification by subject, and the ways they cooperate and transfer demonstrations.
- Shared Questions Among the Sciences294 words
This chapter explores how sciences share subject matters, distinguishing between higher and lower sciences. It also examines the nature of possible events, focusing on those that occur mostly versus accidentally.
- Accidental Matters1109 words
This chapter explores the nature of demonstration, examining how agreements, definitions, and proofs relate. It distinguishes between demonstrations of 'that' and 'why,' and challenges whether definitions can be acquired through demonstration or division.
- How Definition Is Acquired957 words
This chapter examines how definitions are built by combining genus and differentiae, stressing that a true definition must capture the full essence, not just distinguish the thing. The author warns against omitting any essential part, as doing so would leave the definition incomplete.
- The Ten Genera1318 words
This chapter explores the ten Aristotelian categories, beginning with substance and quantity, and examines how definitions and demonstrations relate. It sets the stage for a detailed analysis of these foundational concepts.
- Kinds of Definition2042 words
This chapter explores the divisions of causes and their roles in definition and demonstration, clarifying how they serve as middle terms. It also addresses circular reasoning and the use of specific causes in demonstrations.
- Errors in Explanatory Statements1019 words
In this chapter, we explore common pitfalls in defining terms-errors that can mislead even careful thinkers. By examining mistakes in genus, differentia, and other logical components, we prepare to sharpen our own definitions.
- Fallacies in Syllogism2031 words
This chapter examines the sources of fallacies in syllogisms, distinguishing verbal from material causes. It sets the stage for understanding how errors arise in reasoning, without yet revealing the full classification.
- First Treatise from the Physics of The Salvation1801 words
This chapter lays down the foundational principles of natural science, defining its subject as bodies subject to change and distinguishing it from divine science. It prepares the reader for a systematic exposition of matter, form, and privation as intrinsic principles.
- The Substantiality of Bodies2624 words
This chapter examines divisibility in natural bodies, challenging both infinite division and indivisible parts. It then defines motion as a gradual transition from potentiality to actuality, setting the stage for a detailed analysis of motion's categories and conditions.
- Every Moved Thing Has a Mover Other Than Itself1314 words
This chapter examines the nature of motion, arguing that every motion requires a moving cause distinct from the body itself. It explores types of motion-natural, voluntary, and compelled-and challenges the possibility of indivisible motions.
- Single Motion3714 words
This chapter explores the nature of motion, examining how it can be classified by genus, species, or individuality, and how motions relate to one another in terms of speed, contrariety, and time.
- Place2742 words
This chapter explores the nature of place and void, challenging common assumptions. The discussion moves from defining place to examining whether void can exist, setting up a rigorous philosophical inquiry.
- Finitude and Infinity4533 words
In this chapter, Avicenna tackles the nature of infinity, distinguishing between actual and potential infinities, and argues that infinite magnitude or ordered number cannot coexist actually.
- Every Natural Body Has a Natural Place826 words
This chapter argues that every body has a single natural place and a natural shape. It begins by eliminating possibilities where a body might have multiple or no natural places, leading to the conclusion of a unique natural location.
- The First Places Are the Places of Simple Bodies5711 words
This chapter examines the natural places of simple and composite bodies, arguing that the primary places belong to simples. It explores how composition affects natural motion and place, leading to conclusions about the unity of the world and the nature of celestial bodies.
- Rarefaction and Condensation988 words
In this chapter, we delve into the nature of condensation and rarefaction, examining how bodies change volume without losing or gaining parts. We also explore the causes of bursting vessels and the hidden powers behind seemingly simple physical phenomena.
- Effects of Heat and Cold in Bodies2971 words
This chapter explores how heat and cold interact with moisture and dryness in natural processes, from the formation of minerals to weather phenomena. The discussion builds on elemental principles to explain observable effects in the world.
- The Sixth Treatise: On the Soul641 words
This chapter explores how plants and animals arise from elemental mixtures, focusing on the three distinct powers of the plant soul. It sets the stage for understanding the hierarchy of souls.
- The Animal Soul2134 words
This chapter delves into the faculties of the animal soul, distinguishing motive from perceptive powers and examining how we perceive the world. Avicenna presents a detailed classification of internal senses and a rigorous critique of alternative theories of vision.
- The Rational Soul, Part 14313 words
This chapter explores the rational soul's faculties, distinguishing the practical and theoretical intellects and their roles in governing the body and seeking knowledge. It sets the stage for understanding how these powers interact and the path to intellectual perfection.
- The Rational Soul, Part 22207 words
This chapter presents proofs that the rational soul is not a body nor a power in a body. It examines how intelligibles are abstracted and why intellection cannot rely on a bodily instrument.
- How the Animal Powers Assist the Rational Soul3235 words
In this chapter, the discussion turns to how animal powers assist the rational soul, and the soul's relationship with the body is examined. The text explores the soul's independence and its origin, setting the stage for deeper metaphysical arguments.
- Refuting the Doctrine of Transmigration394 words
This chapter explores the relationship between souls and bodies, arguing that souls arise only when bodies are prepared. The discussion challenges the possibility of reincarnation by examining essential versus accidental causes.
- The Unity of the Soul2058 words
This chapter explores the unity of the soul and the role of the active intellect. It argues that the soul is a single substance with multiple faculties, and introduces the active intellect as an external agent that actualizes potential intellect.
- The One as Coextensive with Being316 words
This chapter explores the relationship between existence and oneness, establishing that everything that exists can be called one. It then examines essential and accidental attributes, distinguishing between those that belong to a thing in itself and those that require mediation.
- Divisions of Being796 words
This chapter examines the divisions of being and the one, exploring how categories and accidents structure reality. It sets the stage for a deeper inquiry into substance, form, and the principles that govern existence.
- Proving Matter and Explaining Bodily Form1025 words
This chapter explores the nature of body, distinguishing between its essential form and accidental dimensions. It argues that body is defined by the capacity for three perpendicular dimensions, not by actual points or lines.
- Matter Is Never Separate from Form1125 words
This chapter examines whether matter can exist without corporeal form. Through a series of logical contradictions, it tests the consequences of stripping matter of its extension.
- Proving Rarefaction and Condensation1120 words
This chapter examines the relationship between matter and form, arguing that quantity is accidental and that form is the cause of matter's existence. It explores how matter receives determination through form.
- The Order of Existents960 words
This chapter ranks existents by priority and examines the nature of unity. It presents a hierarchy from separate substance to accident, then explores categories and mathematical sciences.
- Sensible Qualities Are Accidents, Not Substances670 words
In this chapter, Avicenna examines the nature of sensible qualities like whiteness and heat, questioning whether they are substances or accidents. The argument unfolds through careful logical distinctions.
- Kinds and Conditions of Causes and the Principle3432 words
This chapter classifies causes into material, formal, efficient, and final, with subtypes. It then argues that the need for a necessary being arises from possibility, not temporal origination, and explores potency and act.
- The Eternal and the Originated896 words
This chapter explores the distinction between eternal and temporal existence, examining how things can be considered eternal in essence or in time, and how temporal things are preceded by possibility and matter.
- The Meaning of the Universal841 words
This chapter refines the concept of universality by distinguishing the nature of humanity from its accidental properties. It argues that humanity as such is neither universal nor particular, setting the stage for a deeper analysis of how universals exist in the mind versus reality.
- The Complete and the Incomplete706 words
This chapter explores the concept of perfection and the many meanings of priority, from nature and time to causality and rank. It sets the stage for a nuanced discussion of how these ideas relate to existence and order.
- Essential Origination255 words
This chapter explores the distinction between temporal and essential origination, arguing that effects are essentially dependent on their causes for existence.
- Kinds of One and Many1786 words
This chapter explores the different senses of 'one' and then delves into the nature of necessary and possible existence, laying the groundwork for a deeper metaphysical inquiry.
- The Simplicity of the Necessary Existent795 words
Avicenna now argues that the Necessary Existent must be absolutely simple and perfect. He shows it cannot have parts, potentiality, or any waiting state. The reasoning is dense but leads to a profound conclusion about the nature of ultimate reality.
- The Necessary Existent Is True in Every Sense422 words
This chapter explores the uniqueness of the necessary existent, arguing that it has no equal, opposite, or kind. Prepare for a dense philosophical argument about identity, difference, and the nature of pure truth.
- It Is One Despite Many Modes of Existence2339 words
This chapter tackles a profound question: can there be more than one necessary existent? Avicenna prepares to dismantle that possibility through rigorous logical analysis, examining the very nature of necessity and its relation to essence.
- Proving the Necessary Existent5685 words
This chapter examines how contingent beings must depend on a necessary cause, and explores the nature of motion and change. It sets up a rigorous proof for a First Principle that is intellect, lover, and beloved.
- How the Necessary Existent Knows Things2088 words
This chapter explores how the First knows particular things universally through their causes, and argues that divine attributes like knowledge, power, and will are identical in essence.
- The Emanation of Things from the First Governor3323 words
In this chapter, we explore the nature of the First Principle and the necessity of an intermediary for origination. The discussion delves into the relationship between the Necessary Existence and the emergence of the world, examining whether change can occur in the eternal.
- The Immediate Agent of the First Motion Is a Soul6141 words
This chapter explores the nature of celestial motion, arguing it arises from a soul's desire to imitate the First Principle. Avicenna distinguishes between natural, forced, and voluntary motion, setting the stage for a deeper inquiry into the heavens' obedience.
- The Objects of Desire Mentioned Are Not Bodies3980 words
This chapter explores how celestial motions arise from intellectual principles, examining the possibility that spheres seek assimilation to separate intellects rather than bodies.
- A Third Way to Demonstrate Separate Intellects592 words
This chapter explores the emanation of intellects and celestial spheres from the First Cause, tracing the chain of being from simple intellects to the material world. The discussion centers on how multiplicity arises from unity through intermediaries.
- How the Elements Come to Be from the First Causes5069 words
In this chapter, the discussion turns to the necessity of elements and the nature of evil within divine providence. The text examines how celestial motions and matter interact to produce the physical world, setting the stage for a deeper exploration of order and imperfection.
- The Return of Human Souls, Part 16732 words
This chapter explores the soul's journey after death, distinguishing bodily resurrection from intellectual happiness. It examines how true perfection lies in becoming an intelligible world, and how our current attachments veil us from this higher pleasure.
- The Return of Human Souls, Part 21587 words
This chapter explores why prophets are rare and how they preserve religion through repeated rituals. Avicenna argues that symbolic reminders and prescribed acts keep faith alive for both commoners and the elite.
- On Logic932 words
- On Logic240 words
This chapter lays the foundation by distinguishing two types of knowledge: conception and assent, and introduces logic as the tool to acquire them correctly.
- The Individual Single Word201 words
This chapter refines the distinction between singular and universal terms, then defines what is essential to a thing’s quiddity. It clarifies that essential predicates are those understood first when grasping the essence, while accidental ones can be conceptually stripped away.
- What Is Said in Answer to What It Is133 words
Avicenna explores the distinction among essential predicates: those that answer 'what is it?' and those that do not. This chapter examines the complexity of the former, where a thing's essence arises from a totality of attributes.
- What Is Said in Answer to What Kind It Is139 words
This chapter explores how we distinguish things that share a common nature. It introduces the concept of differentia, both essential and accidental, and sets the stage for the five universal terms.
- Species89 words
In this chapter, we define two key terms: species and differentia. These are essential universals used in classification. Understanding them clarifies how we answer 'what is it?' and 'which thing is it?'.
- Property103 words
This chapter defines specific property and general accident, distinguishing them from essential predicates. It also clarifies the difference between entities, mental images, utterances, and writings.
- The Name103 words
This chapter lays the groundwork for understanding the basic categories of language. It defines noun, verb, particle, statement, and proposition.
- Categorical Propositions100 words
This chapter explores the structure of propositions, distinguishing between categorical and conditional forms. It sets the stage for understanding how different types of statements relate terms or propositions.
- Disjunctive Conditional Propositions125 words
This chapter explores the nature of disjunctive conditionals and their role in logical opposition. It clarifies how negation and predication function within propositions, setting the stage for understanding categorical judgments.
- Quantified Propositions88 words
This chapter explores quantified propositions, breaking down their structure and types. Prepare to see how universal and particular judgments apply in affirmation and negation.
- Quantifiers114 words
This chapter examines the building blocks of categorical propositions, focusing on quantifiers, matter, and the structure of subject, predicate, and relation.
- Privative and Simple Propositions162 words
This chapter examines the distinction between simple and modified propositions, focusing on how negation functions within each. Understanding these differences is key to grasping logical structure.
- Negative Propositions102 words
This chapter clarifies the structure of negative propositions and their modalities. It defines a negative proposition and introduces the three modalities, preparing for a deeper analysis of propositional logic.
- Possibility and Its Meaning267 words
This chapter clarifies a common confusion about possibility. By distinguishing between the common and technical meanings of 'possible,' it resolves paradoxes that arise when modal terms are conflated.
- Necessity and Impossibility225 words
This chapter explores the six modes of necessary predication and their logical relationships with necessity, impossibility, and possibility. Prepare to examine subtle distinctions that define how necessity operates in different contexts.
- Premise and Definition269 words
This chapter explores the nature of premises, focusing on absolute propositions and their interpretations. Two contrasting views are examined, setting the stage for understanding how modality shapes logical judgments.
- Possible Things145 words
In this chapter, we explore the nature of possibility and necessity in modal logic. The text distinguishes between different senses of possibility, preparing us for nuanced logical distinctions.
- Opposed Propositions128 words
This chapter examines the precise conditions under which propositions truly oppose each other. It refines the classical understanding of contradiction by specifying the necessary agreements and differences.
- Conversion of Absolute Propositions220 words
Conversion swaps subject and predicate while preserving truth. This chapter examines when categorical propositions, especially absolute and necessary ones, can be validly converted.
- Conversion of Possible Propositions180 words
This chapter examines the conversion rules for modal propositions, focusing on universal negatives and affirmatives in the true sense. It challenges common misconceptions and clarifies the conditions under which conversion is valid.
- Syllogism98 words
This chapter defines the syllogism as a discourse where premises necessitate a conclusion. It distinguishes complete from incomplete syllogisms and introduces conjunctive and exceptive forms.
- Parts and Figures of Categorical Syllogisms415 words
This chapter examines the three figures of categorical syllogisms, outlining their valid moods and methods of proof. The focus is on the conditions that guarantee a conclusion.
- Composition from Necessary Premises140 words
This chapter examines how necessary premises differ from absolute ones in syllogistic figures, focusing on the limits of reductio and supposition when necessity is involved.
- Mixing Absolute and Necessary Premises in the First Figure117 words
This chapter examines how necessity and absoluteness interact in syllogisms. The rules differ between the first and second figures, with the major premise guiding the conclusion's modality.
- Mixing Them in the Third Figure124 words
Chapter 25 examines necessity in third-figure syllogisms, focusing on which premise determines the modality of the conclusion.
- Mixing Possible and Absolute Premises in the First Figure199 words
Chapter 26 explores how possibility and absoluteness combine in the first figure. The focus is on the conclusion when the major premise is possible or purely absolute.
- Mixing Possible and Necessary Premises in the First Figure120 words
This chapter examines modal syllogisms in the first figure, focusing on mixtures of possibility and necessity. The discussion clarifies when conclusions are possible or necessary.
- Two Possible Premises in the Second Figure135 words
This chapter explores a limitation in syllogistic logic: no valid syllogism arises in the second figure from two possible premises. The analysis examines how natures can be related and why the middle term fails to yield a necessary conclusion.
- Mixing Possible and Necessary Premises in the Second Figure120 words
Chapter 29 examines mixed modal syllogisms in the second and third figures, challenging common views on necessity and possibility.
- Mixing Possible and Necessary Premises in the Third Figure250 words
This chapter explores the logic of mixing possible and necessary premises in the third figure, along with the structure of conditional propositions. It clarifies how affirmation, negation, and quantification apply.
- Categorical Syllogisms from Connected Conditionals60 words
This chapter explores how conditional conjunctions are formed, focusing on the logical relationships between antecedents and consequents.
- Categorical Syllogisms from Disjunctive Conditionals330 words
This chapter explores the intricate combinations of conditional and disjunctive propositions in syllogisms. It examines how different premises can be joined to yield valid conclusions, building on earlier figures.
- Hypothetical Syllogism122 words
This chapter examines the rules of exceptive syllogisms, focusing on how conditional premises yield conclusions through affirmation or denial of parts.
- Composite Syllogisms113 words
This chapter explores how syllogisms can be combined, where the conclusion of one becomes the premise for another. It distinguishes true composition from mere repetition.
- Acquiring Premises156 words
In this chapter, we turn to the practical tools of logic: how to gather premises for a syllogism and how to dissect one already formed. These methods sharpen our reasoning by making its structure visible.
- Establishing Results That Follow the First Question137 words
This chapter explores the logical relationships between conclusions and their converses, and the conditions under which false premises can yield true conclusions.
- Circular Demonstration150 words
Chapter 37 explores the mechanics of circular syllogisms, where premises and conclusions rotate to reveal logical dependencies. The focus is on conditions that make such conversions valid, particularly in affirmative and negative cases.
- Reversal of the Syllogism172 words
This chapter explores two subtle logical tools: inversion of syllogism and reductio ad absurdum. Both manipulate contradictions to test premises, but their methods and purposes differ in ways that sharpen reasoning.
- Syllogism from Opposed Premises255 words
In this chapter, Aristotle examines deceptive reasoning through contradictory premises and question-begging, revealing how sophists manipulate language and knowledge. The analysis uncovers subtle logical pitfalls.
- Analogy125 words
This chapter examines analogy and enthymeme as tools of reasoning. Analogy transfers judgment between cases through a shared meaning, while enthymeme omits a premise for effect.
- Indication205 words
This chapter examines the structure of proof as an enthymematic syllogism, exploring its forms and the role of the middle term. It then contrasts this with physiognomic syllogisms, which rely on empirical correlations rather than necessary causes.
- Conception and Assent144 words
This chapter explores the foundations of knowledge, distinguishing between conception and assent. It examines how both are acquired, either through investigation or as primary givens, and introduces the role of syllogism and definition.
- Reports Transmitted by Many279 words
This chapter classifies propositions by how belief arises, from recurrent reports to imaginative premises. It explores the role of innate disposition (fitra) in belief, distinguishing intellectual from imaginative fitra.
- Probable Judgments101 words
This chapter distinguishes conjecture from conviction and introduces imaginative propositions. It clarifies how beliefs can vary in certainty and purpose, setting the stage for understanding different types of persuasive statements.
- First Principles219 words
This chapter explores how primary propositions arise in the human mind, tracing the journey from sense perception to intellectual universals. It sets the stage for understanding the foundations of certainty.
- The Demonstration of the Present Fact96 words
This chapter explores a specific kind of demonstration that reveals mental connections rather than true causes. It invites us to distinguish between what convinces the mind and what actually exists in reality.
- The Question Whether65 words
This chapter clarifies two fundamental types of inquiry. Understanding their distinction is key to grasping how knowledge is sought in philosophy.
- The Meaning of Which77 words
This chapter examines the relationship between inquiries of 'what' and 'whether,' suggesting a foundational link. The discussion prepares the ground for understanding how distinctions emerge from essential attributes.
- Premises of Demonstrations85 words
This chapter examines the foundations of demonstration, emphasizing that premises must be true, certain, and essential, ultimately tracing back to primary universal statements.
- The Primary Premise148 words
This chapter clarifies two senses of 'primary premise' and redefines 'predicated of all' for demonstration. Understanding these distinctions is essential for grasping how demonstrative premises differ from dialectical ones.
- The Appropriate Middle Term86 words
In this chapter, Aristotle examines the proper source of scientific premises. He argues that they must belong to the same or a related science, not a foreign one, to ensure valid demonstration.
- Subjects187 words
This chapter examines the foundations of scientific inquiry, defining subjects and their essential attributes across disciplines. It sets the stage for understanding how demonstrations are structured.
- Principles Known Before Demonstrations81 words
Before building proofs, we must first understand the foundations. This chapter explores the three kinds of principles that precede demonstration: definitions, postulates, and premises.
- Premises230 words
This chapter examines how sciences relate through premises, classification, and cooperation. It distinguishes specific from common premises and explores how sciences can be distinct, proportionate, or subordinate.
- Shared Questions Among the Sciences98 words
This chapter explores how sciences share subject matters, distinguishing between higher and lower sciences and their respective demonstrations.
- Accidental Matters259 words
This chapter explores the foundations of demonstration and the limits of proof, examining how agreements, definitions, and causes relate to knowledge.
- How Definition Is Acquired221 words
In this chapter, we explore how to construct a definition by assembling genus and differentiae. The goal is not mere distinction but capturing the full essence of a thing.
- The Ten Genera301 words
We continue exploring the ten categories, now examining discrete quantity and the remaining categories. The text distinguishes number from continuous quantity and clarifies subtle differences in terms like 'where' and 'position.'
- Kinds of Definition464 words
This chapter explores the classification of definitions and the role of causes in demonstration, addressing how they interconnect without falling into circular reasoning.
- Errors in Explanatory Statements254 words
Errors in definition can subtly undermine precision. This chapter catalogs common pitfalls in genus and differentia, preparing the reader to recognize and avoid them.
- Fallacies in Syllogism462 words
This chapter explores the sources of fallacies in reasoning, distinguishing errors in wording from those in meaning. Understanding these pitfalls helps refine logical practice.
- First Treatise from the Physics of The Salvation410 words
In this chapter, we explore the foundations of natural science, distinguishing its subject from metaphysics and introducing the intrinsic principles of natural bodies: matter, form, and privation.
- The Substantiality of Bodies595 words
In this chapter, we examine the nature of motion and the divisibility of bodies. The arguments challenge common assumptions about parts and continuity.
- Every Moved Thing Has a Mover Other Than Itself336 words
This chapter examines the nature of motion, arguing that every motion requires an external cause. It distinguishes between natural and voluntary motion, setting the stage for a deeper inquiry into the principles behind celestial and terrestrial movement.
- Single Motion776 words
This chapter explores the unity and contrariety of motion, distinguishing between genus, species, and individual. It then examines relative motions and the nature of contrariety, leading to a discussion of rest and time.
- Place642 words
This chapter examines the nature of place and void, arguing that place is external to the body and that void is impossible. The discussion challenges common assumptions about space and dimensionality.
- Finitude and Infinity997 words
This chapter confronts the possibility of actual infinities in the physical world. Avicenna carefully distinguishes between potential and actual infinity, setting the stage for a rigorous argument that ordered coexistence cannot be infinite.
- Every Natural Body Has a Natural Place181 words
This chapter explores why each body has one natural place and a natural shape. It argues that natural motion and form derive from a body's essence, not from choice or force.
- The First Places Are the Places of Simple Bodies1271 words
In this chapter, Avicenna examines the nature of simple and composite bodies, their places, and the principles of motion. The discussion builds toward a unified cosmos, setting the stage for understanding the celestial and sublunary realms.
- Rarefaction and Condensation272 words
In this chapter, Ibn Sina examines how bodies can condense and rarefy without adding or removing parts. He uses everyday examples like a flask and bursting vessels to challenge common explanations, setting the stage for a deeper inquiry into natural motion.
- Effects of Heat and Cold in Bodies688 words
In this chapter, we delve into the interplay of heat, cold, moisture, and dryness as they shape matter. The text explores how these qualities transform bodies, from hardening to evaporation, and the role of celestial influences.
- The Sixth Treatise: On the Soul166 words
This chapter explores how plants emerge from balanced elements and introduces the three powers of the plant soul. We examine the distinctions between nutritive, growth, and generative powers, setting the stage for a deeper understanding of plant life.
- The Animal Soul488 words
This chapter explores the faculties of the animal soul, dividing them into motive and perceptive powers. Avicenna details the external senses and refutes the emission theory of vision, setting the stage for a deeper look at internal perception.
- The Rational Soul, Part 1955 words
This chapter explores the powers of the rational soul, dividing them into practical and theoretical intellect. It examines how these faculties govern the body and receive from higher principles, setting the stage for understanding the highest human potential.
- The Rational Soul, Part 2547 words
This chapter argues that the rational soul is neither a body nor dependent on a bodily instrument for intellection. Through careful reasoning, it examines how the intellect abstracts forms and knows itself, setting the stage for a deeper understanding of the soul's nature.
- How the Animal Powers Assist the Rational Soul647 words
In this chapter, the soul's dependence on the body for acquiring knowledge is examined, followed by a proof that the soul is neither pre-existent nor mortal.
- Refuting the Doctrine of Transmigration127 words
This chapter examines the relationship between soul and body, arguing that each body deserves its own soul at the moment of temperament. The discussion challenges the notion of reincarnation by highlighting logical inconsistencies.
- The Unity of the Soul458 words
This chapter explores the unity of the soul and the role of the Active Intellect. It argues that the soul is a single substance with multiple faculties, and introduces an external agent that actualizes potential intellect.
- The One as Coextensive with Being124 words
In this chapter, we explore how unity and multiplicity are examined in the science of being. Essential attributes are distinguished from accidental ones, setting the stage for a deeper analysis of what belongs to a thing in itself.
- Divisions of Being235 words
This chapter explores the divisions of being and the one, comparing them to logical distinctions. It sets the stage for understanding how categories, species, and accidents relate to fundamental metaphysical concepts.
- Proving Matter and Explaining Bodily Form232 words
This chapter explores what truly makes a body a body, arguing that it is not actual dimensions but the capacity for them. The corporeal form is defined as this capacity.
- Matter Is Never Separate from Form251 words
This chapter explores whether matter can exist without corporeal form. Through logical analysis, it examines the necessary relationship between material substance and extension.
- Proving Rarefaction and Condensation266 words
This chapter examines the relationship between matter and form, arguing that matter depends on form for its existence. Quantity and place are accidental, determined by form or external causes. The argument deepens the understanding of substance and causality.
- The Order of Existents237 words
This chapter ranks existents by priority, placing separate immaterial substance first. It then examines unity, arguing it is an accidental attribute rather than a constitutive essence.
- Sensible Qualities Are Accidents, Not Substances188 words
This chapter examines a common misconception about sensible qualities. It prepares to show why whiteness, heat, and similar attributes cannot be substances.
- Kinds and Conditions of Causes and the Principle698 words
This chapter classifies causes into matter, form, agent, and end, distinguishing essential from accidental causation. It argues that the need for a necessary being arises from possibility, not temporal origination, and defends inherent powers in bodies against occasionalist views.
- The Eternal and the Originated211 words
This chapter explores the concept of eternity and temporality, distinguishing between essence and time. It sets the stage for a discussion on the prerequisites of temporal events.
- The Meaning of the Universal220 words
This chapter explores the nature of humanity and universality, distinguishing between essence and accidental properties. It sets up a careful analysis of what it means for something to be universal.
- The Complete and the Incomplete157 words
This chapter explores the nature of perfection and priority. It defines what it means for something to be complete and examines different senses of priority.
- Essential Origination101 words
This chapter explores a deeper sense of origination beyond time. It considers how a thing may depend on a cause for its existence at every moment, not just at its beginning.
- Kinds of One and Many404 words
This chapter examines the many senses of 'one' and 'many,' then introduces the distinction between necessary and possible existence. It lays the groundwork for understanding how things can be one in various ways and how necessity can arise from another.
- The Simplicity of the Necessary Existent198 words
In this chapter, Avicenna continues his analysis of the Necessary Existent, arguing that it must be utterly simple and free from any composition or potentiality.
- The Necessary Existent Is True in Every Sense145 words
This chapter explores the unique nature of the necessary existent, arguing it has no equal, opposite, or kind. The reasoning unfolds through careful distinctions.
- It Is One Despite Many Modes of Existence543 words
This chapter tackles a profound question: can there be more than one Necessary Existent? Avicenna argues that necessity of existence cannot be shared, setting up a logical proof against multiplicity.
- Proving the Necessary Existent1350 words
This chapter examines the necessity of a first cause and its nature as intellect, lover, and beloved. It builds on earlier arguments to show that contingent beings require a necessary being, and that this being is self-knowing and the ultimate object of love.
- How the Necessary Existent Knows Things480 words
Avicenna now turns to how the First knows particular things. He argues that such knowledge is universal, grounded in the First's knowledge of causes, and that divine attributes are identical in essence.
- The Emanation of Things from the First Governor765 words
This chapter examines the nature of the First Principle and the problem of origination. It argues for a necessary being free from all attributes and explores how change can arise from an unchanging source.
- The Immediate Agent of the First Motion Is a Soul1413 words
This chapter explores the nature of celestial motion, arguing it is voluntary and caused by a soul. Avicenna examines how the heavens move through desire for the First Principle, setting the stage for a deeper inquiry into the roles of intellect, will, and love.
- The Objects of Desire Mentioned Are Not Bodies792 words
This chapter examines the possibility that celestial bodies are moved by souls seeking assimilation to separate intellects, not by physical necessity. It explores how multiplicity arises from the One through successive intellects.
- A Third Way to Demonstrate Separate Intellects173 words
This chapter explores the emanation of intellects and spheres from the First Cause. It examines how multiplicity arises from unity through intermediaries, setting the stage for a detailed metaphysical hierarchy.
- How the Elements Come to Be from the First Causes1178 words
This chapter explores the necessity of elements, the nature of matter and form, and the problem of evil within a providential cosmos. It examines how celestial bodies influence the sublunary world and why evil accompanies the greater good.
- The Return of Human Souls, Part 11523 words
This chapter explores the soul's journey after death, distinguishing true happiness from misery. It examines how perception and virtue shape the afterlife, and how celestial forces influence earthly events.
- The Return of Human Souls, Part 2367 words
This chapter explores the rarity of prophets and the necessity of ritual practices to sustain faith. It examines how symbolic teachings and prescribed actions help both commoners and elites maintain remembrance of God.
- On Logic240 words
- Introduction to Logic: Conception, Assent, and the Purpose of Logic661 words
This chapter introduces the two fundamental categories of knowledge: conception and assent. It explains how each is acquired and why a disciplined tool like logic is necessary to avoid error.
- Categorical and Conditional Propositions1378 words
We begin with the simplest building blocks of thought: the singular particular expression. A term like 'Zayd' has a single meaning that can apply to only one individual, even in estimation. This stands in contrast to universals, which can be predicated of many.
- Syllogisms: Figures, Moods, and Modal Logic1362 words
This chapter explores the structure and rules of syllogisms, covering the three figures, their valid moods, and methods of proof. It also delves into modal logic, exceptive syllogisms, and compound reasoning, laying the groundwork for understanding logical necessity.
- Demonstration and Scientific Knowledge1113 words
This chapter explores how scientific knowledge is built from primary truths, definitions, and demonstrations. It examines the types of propositions that compel belief and the conditions for valid reasoning.
- Natural Philosophy: Body, Motion, and Soul931 words
This chapter establishes the foundations of natural science, examining bodies as subject to change. It defines matter, form, and privation as intrinsic principles, and explores motion, place, and the impossibility of the void.
- Metaphysics: Existence, Causality, and the Necessary Existent999 words
This chapter explores the fundamental attributes of existence, beginning with unity and multiplicity, and examines the nature of body, matter, and form. It then ascends to the Necessary Existent and its properties, culminating in a discussion of providence and prophecy.
- Introduction to Logic: Conception, Assent, and the Purpose of Logic661 words
Related works
Thematic kin
- A Compendium on the Soul
De Redding geeft Avicenna's brede filosofische raamwerk; het Compendium over de ziel zoomt in op een van de kernvragen daarvan.
Responses
- The Incoherence of the Philosophers
Avicenna biedt een krachtige filosofische synthese; Al-Ghazali onderzoekt precies waar zo'n synthese volgens hem theologisch en logisch breekt.
Maybe next
- The Virtuous City
Avicenna's metafysica staat niet los van Al-Farabi's politieke filosofie: beiden zoeken hoe menselijk leven past in een grotere orde.