"To live is the rarest thing in the world. Most people exist, that is all."
– Oscar Wilde
René Descartes, a 17th-century French philosopher, is known for the philosophical statement, “I think, therefore I am”, which is originally in French and best known by its Latin translation, Cogito, ergo sum.
Descartes came to this conclusion after searching for a statement that could not be doubted. He realized that he could not doubt his own existence because he was the one doing the doubting