Iamblichus 
Pythagoric Life [EPUB ebook] 

When it is considered that Pythagoras was the father of philosophy, authentic memoirs of his life cannot fail to be uncommonly interesting to every lover of wisdom, and particularly to those who reverence the doctrines of Plato, the most genuine and the best of all his disciples. And that the following memoirs of Pythagoras by Iamblichus are authentic, is acknowledged by all the critics, as they are for the most part obviously derived from sources of very high antiquity; and where the sources are unknown, there is every reason to believe, from the great worth and respectability of the biographer, that the information is perfectly accurate and true.