Pythagoras (570-490 BC) greek philosopher founder of Pythagoreanism. Founded his school in Crotone (532 BC) and then moved to Metaponto. Mathematical sublime; his famous theorem on the fundamental relationship between the sides of a right triangle. Portrait by: 'gallery of the ancient Greeks and Romans with a small description of their lives' by Georg Wilhelm Zapf; dedicated the Altitude serenissima Carlo Federico Margrave of Baden; Translation from the German by Tommaso de Bassus (1742-1815) by Giuseppe Ambrosioni; Volume I; 1784 Poschiavo