Authors / René Descartes

René Descartes quotes

1596–1650 · French philosopher and mathematician

Descartes decided to doubt everything he could and found one thing he couldn't. He also invented the coordinate system you used in school.

2 real · 0 not theirs

2 quotes traced to René Descartes's own work or a reliable witness.

Sourced

I think, therefore I am.

Source: Discourse on the Method, Part IV (1637)

Sourced

It is not enough to have a good mind; the main thing is to apply it well.

Source: Discourse on the Method, Part I (1637)