Step 1 : Introduction to the question "Which philosopher said, "I think, therefore I am"?"
...René Descartes was a 17th-century French philosopher best known for the groundbreaking statement "Cogito, ergo sum" which translates to "I think, therefore I am." The phrase is considered the "first principle" of Descartes' philosophy and is the result of his search for a statement that could not be doubted. This profound insight became a cornerstone of Western philosophy, as it asserted that the very act of doubting proved the existence of a thinking being. Hence, the act of thinking itself became undeniable proof of his own existence.