Meditations on First Philosophy, in which the existence of God and the immortality of the soul are demonstrated, often simply called Meditations on First Philosophy or the Meditations, is a philosophi
The title page of the Meditations
Cogito, ergo sum
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The Latin cogito, ergo sum, usually translated into English as "I think, therefore I am", is the "first principle" of the philosophy of the French scientist and philosopher René Descartes. He original
Meditations on First Philosophy
…In other words, one's consciousness implies one's existence. In one of Descartes' replies to objections to the book, he summed this up in the phrase cogito, ergo sum, 'I think therefore I am.' Once he secures his existence, however, Descartes seeks to find out what "I" is. He rejects the typical method, which looks…
René Descartes, who published the phrase in Discourse on the Method, in 1637
"ego cogito, ergo sum" with margin note in original (1644) Principia Philosophae