Pythagoras (580?-520? B.C.) < Mathematicians in the Yahoo! Directory

Pythagoras of Samos
Biography of the man often described as the first pure mathematician.
www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Pythagoras.html
Pythagoras and the Pythagoreans, Fragments and Commentary
From Hanover College's Historical Text Project.
history.hanover.edu/texts/presoc/pythagor.htm
Pythagoras - Internet Encyclopedia of Philosophy
But he wrote nothing, and it is hard to say how much of the doctrine we know as Pythagorean is due to the founder of the society and how much is later development.
www.utm.edu/research/iep/p/pythagor.htm

Yahoo! Directory