<P> Cogito , ergo sum is a Latin philosophical proposition by René Descartes usually translated into English as `` I think , therefore I am '' . The phrase originally appeared in French as je pense , donc je suis in his Discourse on the Method , so as to reach a wider audience than Latin would have allowed . It appeared in Latin in his later Principles of Philosophy . As Descartes explained , `` we can not doubt of our existence while we doubt ... '' A fuller version , articulated by Antoine Léonard Thomas , aptly captures Descartes 's intent : dubito , ergo cogito , ergo sum ( `` I doubt , therefore I think , therefore I am '' ) . The concept is also sometimes known as the cogito . </P>
<P> Cogito , ergo sum is a Latin philosophical proposition by René Descartes usually translated into English as `` I think , therefore I am '' . The phrase originally appeared in French as je pense , donc je suis in his Discourse on the Method , so as to reach a wider audience than Latin would have allowed . It appeared in Latin in his later Principles of Philosophy . As Descartes explained , `` we can not doubt of our existence while we doubt ... '' A fuller version , articulated by Antoine Léonard Thomas , aptly captures Descartes 's intent : dubito , ergo cogito , ergo sum ( `` I doubt , therefore I think , therefore I am '' ) . The concept is also sometimes known as the cogito . </P>
where did i think therefore i am come from
where did i think therefore i am come from
René Descartes
René Descartes