Work · Descartes
Meditations on First Philosophy
1641 · Six meditations
Descartes shuts himself in a warm room, resolves to doubt absolutely everything, and rebuilds knowledge from the one thing he cannot doubt.
6
Meditations
1641
Published
Six days
One per sitting
The descent into doubt, and the climb back up
The first three Meditations tear down; the last three build back up. The demon is a tool, not a belief: doubt cranked to its limit to find what survives it. The climb back to the world runs through God, the exact step Mersenne and Arnauld attacked as circular.
The shape of the argument
Meditation I
Methodic doubt: the senses deceive, waking cannot be told from dreaming, and a malignant demon could rig even arithmetic. Nothing is left standing.
Meditation II
The one survivor: the doubter cannot doubt that he exists. The phrasing here is “I am, I exist.” Then the ball of wax: the mind, not the senses, grasps it.
Meditation III
The first proof of God (the trademark argument): the idea of an infinite, perfect being is too large for a finite mind to have made, so a perfect being placed it there.
Meditation IV
The cause of error: the will is wider than the intellect, and error is the will affirming what the intellect never clearly perceived. The fix is to assent only to the clear and distinct.
Meditation V
The second proof of God, the ontological argument: existence belongs to a supremely perfect being’s essence as three angles belong to a triangle.
Meditation VI
The real distinction of mind and body, and the external world recovered: a non-deceiving God would not let so strong a belief in bodies be wholly false.
The cast
Descartes — the meditator: doubts everything, then rebuilds from the one certainty he finds
The evil demon — the deceiver hypothesis: the strongest possible doubt, built as a tool, not believed
God — proved twice, then made the guarantor that clear and distinct ideas are true
The famous bits
Methodic doubtMeditation I
Tear out the foundations once in a life and accept nothing back that is not certain: the senses deceive, and waking cannot be told from sleep.
The evil demonMeditation I
“Some malignant demon, who is at once exceedingly potent and deceitful, has employed all his artifice to deceive me.” The terminal doubt.
“I am, I exist”Meditation II
The slogan “I think, therefore I am” is the Discourse and the Principles; the Meditations says “I am, I exist,” true each time it is thought.
The ball of waxMeditation II
Hold the wax to the fire and every sensed quality changes, yet it is the same wax. The mind grasps it, not the senses.
The two proofs of GodMeditations III, V
The trademark argument (the idea of perfection needs a perfect cause) and the ontological argument (existence belongs to God’s essence).
Mind and bodyMeditation VI
The real distinction: a thinking, unextended thing and an extended, unthinking thing, “entirely and truly distinct,” able to exist apart.