Pythagoras was a famous philosopher, mathematician and astronomer in ancient Greece from 572 BC to 492 BC. Thales was an astronomer, mathematician and philosopher in ancient Greece (624-547 BC). Archimedes (287 BC-2 BC12), a great philosopher, encyclopedic scientist, mathematician, physicist and mechanic in ancient Greece, was the founder of statics and hydrostatics and enjoyed the reputation of "the father of mechanics". Archimedes, Gauss and Newton are listed as the three greatest mathematicians in the world. Ancient Greek philosophers, there are three consecutive figures we have to mention: Socrates, Plato and Aristotle. Together, the three of them founded today's western philosophy.