The quest for truth is a passionate adventure, while philosophy is a total commitment. Such are the values that marked the exceptional destiny of Pythagoras, whose genius was equalled only by the mystery that still surrounds him. This is an atypical book that completely renews the approach to an enigma dating back twenty-five centuries. Thoroughly documented but resolutely freed from the conventions and stereotypes of a certain critical tradition coming from Aristotle, it aims to unveil new perspectives on the ’Pythagorean question’, which should -at last- enable everyone to penetrate the intimacy of the Master of Samos’ thought, with a chance to rediscover the path to a lost wisdom.