2 Answers | Add Yours
The popular saying "I can therefore I am" is by Simone Weil (3rd February 1909 - 24 August 1943) the famous French philosopher and social activist.
This question has already been answered. Here is a link for you: http://www.enotes.com/lit/q-and-a/what-play-does-line-can-therefore-am-come-from-36293
We’ve answered 395,711 questions. We can answer yours, too.Ask a question