Philosopher of Method
René Descartes
Your quest companion appears in the header, offers one of their ideas on your home page each day, and cheers you on in lessons. You can change companions at any time, and your progress stays the same.
A French philosopher and mathematician who tried to rebuild knowledge on what could not be doubted, starting from the thinking self.
Key work: Meditations on First Philosophy (1641)
“I think, therefore I am.”
Key ideas, in brief (in our words)
Doubt everything that can be doubted, then rebuild.
A clear and distinct idea is a sound place to start.
Mind and body are different kinds of thing.
Read more: Stanford Encyclopedia of Philosophy
On the climb
What the Doubt Cannot Throw OutTest Your CertaintyThe Brain in a Vat
Quest with René Descartes above to start the climb and open these lessons.
