I think therefore I am

English

Etymology

First expressed in French by René Descartes, a 17th century French philosopher. Calque of French je pense, donc je suis.

Phrase

I think therefore I am

  1. (philosophy) I am able to think, therefore I exist. A philosophical proof of existence based on the fact that someone capable of any form of thought necessarily exists.

Usage notes

  • Subject to many humorous variations, such as I drink therefore I am, I speak therefore I am, or I shop therefore I am.

Translations

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