Answer: Descartes
Some extra relevant information:
The philosophical idea of “I think, therefore I am” was proposed by René Descartes. Descartes, a 17th-century philosopher, introduced this concept as a fundamental principle in his book “Meditations on First Philosophy.” This philosophical statement, often referred to as “Cogito, ergo sum” in Latin, is a foundational element of Descartes’ philosophical system. It expresses the certainty of one’s existence through the act of thinking. Descartes argued that even if all our sensory perceptions and external reality were deceiving, our ability to doubt and think cogently is an undeniable proof of our existence. This concept has remained a significant and enduring contribution to Western philosophy, emphasizing the importance of critical thinking and introspection.