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Let’s give the last word, plus one of mine, to the famous phrase of French philosopher and scientist Rene Descartes: “Cogito ergo sum ridens” — “I think, therefore I am laughing.”

The French Enlightenment philosopher René Descartes famously observed that every self-aware being is able to declare, figuratively if not literally, the Latin statement "Cogito ergo sum" — that is, "I think therefore I am."

Cogito ergo sum // "I think, therefore I am"

The next year Descartes formulated his famous doctrine cogito ergo sum, ‘I think therefore I am’; consequently, there is something, one thing, I know for certain.

René Descartes summed this up in his famous phrase: cogito ergo sum – I think, therefore I am.