Cogito ergo sum. <i>(I think, therefore I am.)</i> - René Descartes

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Cogito ergo sum. (I think, therefore I am.)

René Descartes

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About René Descartes

René Descartes (March 31, 1596 – February 11, 1650) was a highly influential French philosopher, mathematician, physicist and writer. He is known for his influential arguments for substance dualism, where mind and body are considered to have distinct essences, one being characterized by thought, the other by spatial extension. He has been dubbed the "Father of Modern Philosophy" and the "Father of Modern Mathematics." He is also known as Cartesius.

Biography information from Wikiquote

Also Known As

Alternative Names: Descartes • Cartesius • Renatus Cartesius

Full Quote All quotes from René Descartes Similar Quotes by other Originators

Shorter versions of this quote

I think; therefore I am.

I think therefore I am

I think therefore I am.

Cogito ergo sum

Originators like René Descartes:

Benedictus de Spinoza Georg Christoph Lichtenberg Immanuel Kant Michel de Montaigne Albert Einstein

Additional quotes by René Descartes

El esquema de la demostración es el siguiente: la existencia es una perfección; Dios tiene todas las perfecciones; luego Dios tiene la existencia. Como se ve, Descartes considera la existencia de Dios tan segura y evidentemente demostrada como la propiedad del triángulo de tener tres ángulos.

If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things.

i manifestly understand that there is more reality in infinite than in finite substance, and that therefore the perception of the infinite in me must be in some way prior to that of the finite: the perception of god, in other words, prior to that of myself. for how could i possibly understand that i doubt, and that i desire, that is, that there is something lacking in me, and that i am not completely perfect, if there were no idea in me of a more perfect being, by comparison with which i could recognize my own shortcomings?