Qui a dit "cogito, ego sum" ?
Diderot
Moliere
Descartes
Baudelaire

Question

Qui a dit "cogito, ego sum" ?
Diderot
 Moliere
Descartes 
Baudelaire

Answer

Descartes;
If I don't  remember badly, he was also the author of the 'onthological proof' of
God's existence (which in my humble opinion is not a proof at all);
I think his contributions to Mathematics and Geometry was more relevant.

Answer

Bonjour

Cogito, ergo sum est une expression latine du philosophe René Descartes qui signifie « je pense, donc je suis ». ... Tout un programme !

Answer

Hi Aiboud: 

It was DESCARTES and, like Mike just said, it is: "Cogito ERGO sum" or in spanish: "Pienso, por lo tanto existo" (I think, therefore I exist). In french: " Je pense, donc je suis".

Answer

it's "cogito ERGO sum"