When did Pythagoras become the first philosopher?

Pythagoras predated Plato and Aristotle by 150 years. While many give him the most credit for his contribution to mathematics, he was the first to pose philosophical questions concerning divinity and death. Pythagoras was the first to suggest that the human soul did not die. Secondly, Pythagoras was the first to associate religion with a strict measure of living. This strictness included diet and spirituality. Much of what Pythagoras suggested was at the foundation of what was discussed later by famous philosophers.