Themes & patterns

A Treatise of Human Nature

The chapter's introduction establishes the foundational premise that all knowledge derives from experience, beginning with the distinction between lively impressions and their fainter copies, ideas.

Book I: Of the Understanding

Hume establishes that all ideas derive from impressions, grounding knowledge in sensory experience.

Part I: Of Ideas, Their Origin, Composition, Connection, Abstraction, etc.

Hume establishes that all ideas are derived from impressions, emphasizing the empirical basis of thought.

Section I: Of the Origin of Our Ideas

Hume establishes that all simple ideas originate from simple impressions, emphasizing the foundational role of sensory experience.

Section II: Division of the Subject

Hume asserts that simple impressions are prior to ideas, and that impressions of reflection derive from prior ideas of sensation.

Section III: Of the Ideas of the Memory and Imagination

Hume grounds memory and imagination in impressions, asserting that all ideas are derived from prior impressions.

Book I: Of the Understanding

The principles of resemblance, contiguity, and cause and effect govern the connection of ideas.

Part I: Of Ideas, Their Origin, Composition, Connection, Abstraction, etc.

The chapter outlines the principles of association—resemblance, contiguity, and cause and effect—that connect ideas.

Section III: Of the Ideas of the Memory and Imagination

The liberty of imagination to transpose ideas is based on the separability of impressions, a key principle in Hume's associationist framework.

Section IV: Of the Connection or Association of Ideas

Hume identifies three principles of association—resemblance, contiguity, and cause and effect—that guide the imagination's connection of simple ideas.

Section V: Of Relations

Hume distinguishes natural relations that connect ideas in the imagination from philosophical relations based on arbitrary comparison.

Section IX: Of the Effects of Other Relations and Other Habits

The chapter explores the associative principles of resemblance, contiguity, and causation, and their differing effects on belief.

Section X: Of the Influence of Belief

The chapter examines how belief influences the passions, and how passions in turn can make ideas more readily believed, as in the case of a coward's fear.

Book II: Of the Passions

The chapter introduces the passions as a distinct class of impressions and sets the stage for exploring how they relate to the self, particularly through pride and humility.

Part I: Of Pride and Humility

The chapter's central focus is on pride and humility as passions that have the self as their necessary and primary object.

Section I: Division of the Subject

The chapter introduces the classification of passions into direct and indirect, setting the stage for an analysis of how passions relate to the self and to external objects.

Section II: Of Pride and Humility, Their Objects and Causes

Pride and humility are passions that have the self as their object, and their causes are external qualities or subjects related to the self.

Section III: Whence These Objects and Causes Are Derived

Discusses how pride and humility have self as their object, determined by an original property.

Section VIII: Of Beauty and Deformity

Hume notes that men consider the sentiments of others in judging themselves, as seen in the shame of diseases that are dangerous or disagreeable to others, indicating social influence on passions.

Section XI: Of the Love of Fame

Hume details the mechanism of sympathy, showing how we receive and internalize the sentiments of others, which is central to understanding the love of fame.

Section XII: Of the Pride and Humility of Animals

Animals show pride in the approbation of familiar humans, indicating a social dimension to these passions.

Part II: Of Love and Hatred

Hume discusses how sympathy with others' feelings and situations plays a crucial role in generating love and hatred, and how social comparison influences these passions.

Section I: Of the Object and Causes of Love and Hatred

The desire for reputation and the correspondence of sentiments between individuals suggests a social dimension to these passions.

Section II: Experiments to Confirm This System

The chapter discusses how passions extend to friends and relations, showing the social influence on emotional responses.

Section X: Of Property and Riches

Hume references justice as potentially artificial, with property defined in relation to justice and moral equity.

Section II: Moral Distinctions Derived from a Moral Sense

Hume hints that some virtues may be artificial, and that the sense of virtue may be partly artificial, though he defers the full discussion.

Part II: Of Justice and Injustice

The central theme of the chapter, arguing that justice is a human invention, not a natural instinct.

Section I: Justice, Whether a Natural or Artificial Virtue?

Hume argues that justice is an artificial virtue, arising from human conventions and necessity, not from natural motives.

Section II: Of the Origin of Justice and Property

Justice is presented as an artificial virtue, established by convention to remedy the inconveniences of selfishness and limited generosity.

Section III: Of the Rules Which Determine Property

Property is an artificial virtue, derived from conventions and rules of justice, not from natural instincts.

Section VII: Conclusion of This Book

Hume suggests that philosophy, if just, presents only mild and moderate sentiments, contrasting this with the dangerous errors of religion, which can disturb the conduct of life.

Section VII: Of Vice and Virtue

Hume argues that vice and virtue are distinguished by the pleasure or pain they produce, aligning with the view that moral distinctions are based on sentiment.

Section I: Of the Object and Causes of Love and Hatred

Virtue and vice are cited as causes of love and hatred, indicating that moral judgments are tied to emotional responses.

Section II: The Same Subject Continued

Hume argues that moral responsibility depends on the connection between actions and character, which is only possible under necessity.

Section III: Of the Influencing Motives of the Will

The chapter lays groundwork for Hume's view that moral distinctions are based on sentiment rather than reason, as reason alone cannot influence action.

Book III: Of Morals

The epigraph's focus on seeking the 'exemplar honesti' (model of the honorable) suggests an inquiry into the source of moral distinctions, a central concern of this book.

Section VI: Of Modes and Substances

By reducing substance to a collection of qualities, Hume undermines the notion of an unknown substratum, a key skeptical move.

Part II: Of the Ideas of Space and Time

The rejection of the idea of a vacuum and the limitation of our ideas to what is derived from impressions demonstrates a skeptical stance towards concepts that go beyond our perceptual experience.

Section I: Of the Infinite Divisibility of Our Ideas of Space and Time

Hume challenges common assumptions about the nature of objects, suggesting that our perceptions may not accurately represent their true divisibility.

Section II: Of the Infinite Divisibility of Space and Time

By questioning the infinite divisibility of space and time, Hume challenges the nature of external reality and our ability to know it.

Section III: Of the Other Qualities of Our Idea of Space and Time

Hume's analysis reduces space and time to mere collections of perceptions, challenging the notion of an independent external reality.

Section IV: Objections Answered

Hume questions the certainty of geometrical and mathematical knowledge, suggesting that our standards of equality and perfection are imaginary fictions.

Section IV: Of the Connection or Association of Ideas

The association of ideas is described as a 'gentle force' that operates uniformly, and Hume notes that long custom leads the imagination to follow regular patterns.

Section VII: Of Abstract Ideas

The chapter explains how general terms and abstract ideas function through custom and habit, which allow the mind to apply particular ideas universally.

Section III: Of the Other Qualities of Our Idea of Space and Time

The formation of abstract ideas of space and time relies on custom and the habitual association of similar impressions.

Section IV: Objections Answered

The mind forms fictions of perfect equality and right lines through custom, even when reason has ceased to support them.

Section V: The Same Subject Continued

Hume explains that we mistake words for ideas and confound ideas due to close relations, leading to false beliefs about vacuum and time.

Part III: Of Knowledge and Probability

The chapter discusses how belief arises from custom and habit, and how general rules influence our judgments.