Discourse on the Method of Rightly Conducting One’s Reason and of Seeking Truth in the Sciences
The first-person narrator, representing Descartes, recounts his intellectual journey and method.
Prefatory Note by the Author
The author speaks in the first person, referring to himself as 'the Author' and outlining the structure of the work.
Discourse on the Method
The first-person narrator who undertakes the method of doubt and discovers the cogito.
Meditations on the First Philosophy: In Which the Existence of God and the Immortality of the Soul Are Demonstrated
The first-person narrator who undertakes the meditative journey, doubting all things and discovering the cogito, God's existence, and the distinction between mind and body.
Synopsis of the Six Following Meditations
The narrator (Descartes) presents the synopsis of the meditations, explaining the order and purpose of each.
Meditations on the First Philosophy
The narrator reflects on the certainty of knowledge, the role of God, and the nature of perception and error.
Meditation I: Of the Things of Which We May Doubt
The first-person voice of Descartes, who undertakes the project of universal doubt.
Meditation II: Of the Nature of the Human Mind; and That It Is More Easily Known Than the Body
The narrator (Descartes) recounts his philosophical journey, expressing doubt and seeking certainty.
Meditation III: Of God: That He Exists
The meditator who systematically doubts and examines his own nature, seeking to establish a foundation for knowledge.
Meditation IV: Of Truth and Error
The meditator reflects on his own nature, the source of error, and the proper use of free will.
Meditation V: Of the Essence of Material Things; and, Again, of God; That He Exists
The meditating 'I' who reflects on clear and distinct ideas, mathematical truths, and the ontological argument for God.
Meditation VI: Of the Existence of Material Things, and of the Real Distinction Between the Mind and Body of Man
The first-person voice conducting the inquiry into the existence of material things and the nature of mind-body union.
Selections from the Principles of Philosophy
First-person perspective used in reasoning about doubt, perception, and the order of knowledge.
Dedication
First-person voice of Descartes in the dedication.
Selections from the Principles of Philosophy
The philosophical 'I' who undertakes the method of doubt and arrives at the Cogito.
Part I: Of the Principles of Human Knowledge
The philosophical 'I' who undertakes the method of doubt and arrives at the cogito.
I
The voice of the text, reflecting on the need to doubt all things once in life.
II
The voice presenting the methodological advice to doubt all that is uncertain.
III
The narrator advises on the proper scope of doubt, distinguishing theoretical contemplation from practical action.
IV
The narrator adopts a posture of universal doubt, questioning the reliability of the senses and the distinction between dreaming and waking.
Why we may also doubt of mathematical demonstrations
The voice conducting the meditation, expressing the universal 'we' in the process of doubt.
VI
The narrator reflects on the freedom of the will to withhold assent from uncertain things.
VII
The philosophical 'I' that doubts and thereby affirms its own existence.
VIII
The 'we' who examines the nature of the mind and discovers its distinctness from the body.
IX
The narrator (Descartes) defines thought and distinguishes bodily acts from the consciousness of those acts.
XI
The first-person voice that reasons about the certainty of the mind's existence.
XII
The narrator explains the common error of conflating mind and body.
In what sense the knowledge of other things depends upon the knowledge of God
The mind that knows itself and examines its own ideas and common notions.
XIV
The mind that reviews its ideas and infers God's existence.
XVI
The narrator explains the obstacle of prejudice in recognizing God's necessary existence.
XVII
The narrator reflects on the relationship between the perfection of ideas and their causes.
XIX
The narrator reflects on the clarity of God's perfections despite their incomprehensibility.
XXI
Presents the argument that the duration of life proves God's existence.
XXII
The narrator reflects on the innate idea of God and the attributes that can be known through natural reason.
XXIV
The voice guiding the reader from knowledge of God to knowledge of creatures, emphasizing the finitude of human understanding.
XXV
The narrator presents the argument for accepting divine revelation beyond human reason.
Chapter XXVII: On the Indefinite and the Infinite
The narrator explains the distinction between the indefinite and the infinite, using 'we' to represent the philosophical perspective.
XXVIII
The voice presenting the argument against seeking final causes and in favor of efficient causes.
The Guarantee of Truth Through God's Veracity
The narrator articulates the resolution of doubt through God's veracity.
XXXII
Presents the classification of thought into perception and will.
That we never err unless when we judge of something which we do not sufficiently apprehend
The narrator explains the nature of error and the importance of clear and distinct perception.
XXXIV
The narrator presents the argument that both understanding and will are necessary for judgment.
XXXVI
The voice presenting the argument that God is not responsible for our errors.
XXXVII
The narrator presents the argument that free will is the chief perfection of man.
XXXVIII
The narrator presents the argument that error stems from our mode of action, not our nature.
XXXIX
The 'we' and 'us' representing the thinking subject experiencing the consciousness of free will.
XL
The voice reflecting on the difficulty of harmonizing God's preordination with free will.
XLI
The narrator reflects on the reconciliation of free will and divine preordination.
XLII
Explains the paradox of error arising from the will despite no one wishing to be deceived.
XLIV
The narrator reflects on the nature of judgment and the deceptive role of memory.
XLV
The narrator explains the criteria for clear and distinct perception.
XLVI
The narrator explains the distinction between clear and distinct perceptions using the example of pain.
XLVII
The narrator reflects on the mind's immersion in the body during early years and the need to correct prejudices.
XLVIII
The narrator presents the classification of all objects of knowledge into things and eternal truths.
XLIX
The narrator presents the classification of eternal truths as common notions or axioms.
LI
The voice explaining the concept of substance and its application to God and creatures.
LIII
The narrator presents the argument that each substance has a principal attribute.
LIV
The narrator explains the method for obtaining clear and distinct ideas of thinking substance, corporeal substance, and God.
LV
The narrator explains the distinct conception of duration, order, and number as modes of thinking about things.
LVI
The narrator explains the philosophical distinctions among modes, qualities, and attributes.
LVII
The narrator explains the distinction between attributes existing in things and those existing only in thought, using time as an example.
LVIII
Presents the argument that number and universals are modes of thinking.
LIX
The narrator explains the formation of universals and the five common terms.
Of the Modal Distinction
The narrator explains the nature of modal distinctions, using examples such as figure and motion in corporeal substance, and affirmation or recollection in the mind.
How Thought and Extension May Be Distinctly Known
The narrator explains the distinction between thought and extension as constituting the natures of mind and body.
LXIV
The narrator explains the distinction between modes and substance regarding thought and extension.
LXV
The narrator explains the method for apprehending modes of thought and extension.
LXVI
The narrator (Descartes) explains the proper method for judging sensations, affections, and appetites.
LXVII
The narrator presents the argument that sensations like pain are misattributed to body parts due to early prejudices.
LXIX
The narrator presents the distinction between primary and secondary qualities.
LXX
The narrator explains the two ways of judging sensible things and the nature of color perception.
LXXI
The narrator describes the early life of the mind and the origin of prejudices.
LXXII
Reflects on the persistence of childhood prejudices and their role in causing errors.
LXXIII
The narrator describes the mind's difficulty attending to non-sensible objects and the resulting errors in judgment.
LXXIV
The narrator (Descartes) identifies the fourth source of error and reflects on the relation between words and thoughts.
LXXV
The narrator presents the summary of correct philosophizing, speaking in first-person plural ('we').
Part II: Of the Principles of Material Things
The 'I' who doubts, perceives, and reasons through the principles of material things.
I
The voice of the philosophical investigation, reasoning about the existence of material things.
II
The narrator describes the mind's awareness of sensations arising from its union with the body.
III
The narrator presents the argument that sensory perceptions serve the mind-body union, not objective truth.
IV
The voice presenting the argument that the nature of body is extension alone.
V
Presents the argument that the nature of body is extension alone and refutes common misconceptions.
In what way rarefaction takes place
The narrator presents the explanation of rarefaction and condensation, urging the reader to attend to their own thoughts and admit only what is clearly conscious.
VII
The first-person voice presenting the argument on rarefaction.
VIII
The narrator presents the argument that quantity and number differ from substance only in thought.
Of Space or Internal Place
The narrator presents the philosophical analysis of space and body.
How Space Differs from Body in Our Mode of Conceiving It
The narrator explains the conceptual distinction between space and body.
XIII
The narrator explains the concept of place and its relativity.
Wherein Place and Space Differ
The narrator explains the distinction between place and space.
XV
The narrator explains the distinction between internal and external place, and the concept of superficies as a mode.
XVII
The narrator explains the common usage of the term 'vacuum' and cautions against misunderstanding it as absolute emptiness.
XIX
The narrator presents the argument that the nature of body is extension and that rarefaction cannot involve a change in the quantity of matter.
XX
The narrator presents the argument against the existence of atoms.
Chapter XXI
The narrator presents the argument for the indefinite extension of the world.
Chapter XXII
The narrator presents the argument that the matter of the heavens and earth is the same, and that a plurality of worlds is impossible.
XXIII
The narrator presents the philosophical argument about the nature of matter and motion.
XXIV
Explains the concept of motion and its relativity.
XXV
The narrator defines motion in precise philosophical terms.
II
The voice delivering the cautionary advice about human presumption regarding God's ends.
CLXXXIX
Explains the nature of perception and the mechanism of sensation.
CXC
The narrator describes the distinction of senses and the mechanism of passions and natural appetites.
Of the external senses; and first of touch
The narrator explains the mechanism of touch and the origin of tactile sensations, pleasure, and pain.
Of Taste
The narrator describes the mechanism of taste perception.
CXCIV
The narrator describes the physiological process of hearing.
CXCV
The narrator explains the mechanism of sight and references Descartes' earlier works.
CXCVI
Presents the argument and the experimental example of the girl with the amputated arm.
CXCVII
The 'we' and 'our' used to describe the universal human mind.
CXCVIII
The narrator presents the argument that sensory qualities are reducible to motion and figure.
CXCIX
The narrator (Descartes) summarizes the completeness of his explanation of natural phenomena.
CCI
First-person voice ('I', 'me') used to express the philosophical position.
CCV
The narrator presents the argument distinguishing moral certainty from absolute certainty.
CCVI
The narrator presents the argument for absolute certainty and defends the conclusions of the treatise.
CCVII
The speaker who submits his opinions to the church and reason.
Appendix
First-person voice guiding the reader through the postulates and reasoning.
