Pythagoras was an influential Greek mathematician and philosopher, best known for the theory which he gave his name.... Very little is known about his life, however.... He is believed to have been born on the Greek island of Samos around 580 BC, travelling widely during his youth, visiting Egypt and Persia. Eventually, he settled in the city of Crotone in southern Italy, and is thought to have been killed or died around 500 BC.It is in Crotone that Pythagoras began teaching and gained a reputa