The work of Jamvlich "On the Pythagorean Life" is the largest in volume and the most complex of all the surviving works on Pythagoras. Unlike the other two surviving writings on Pythagoras - Diogenes of Laertes and Porphyry - Jamblichus's book goes beyond biography. This is not just a biography of Pythagoras, but a systematic exposition of the Pythagorean lifestyle and teachings that Pythagoras preached in his school.