Rene Descartes (1596-1650) proposed that we question, doubt and be skeptical about everything on the basis of scientific method. "Only by doubt, questioning and examining the facts can we come to know the truth"
It was Descartes also who said " Cogito ergo sum" - "I think therefore I am"
Maybe Descartes posed that as a question..."I think therefore...I am? Descartes was a religious person...yet he was always demanding proof of a god, or super-human or unseen/unheard "power" or "force". He created a lot of controversy;