Note 24 — Chapter I · SPECULATIVE PHILOSOPHY IN GREECE, BEFORE AND IN THE TIME OF SOKRATES.
Reading edition
Diogen. Laert. viii. 7-15-78-85.
Some passages of Aristotle, however, indicate divergences of doctrine among the Pythagoreans themselves (Metaphys. A. 5, p. 986, a. 22). He probably speaks of the Pythagoreans of his own time when dialectical discussion had modified the original orthodoxy of the order. Compare Gruppe, Ueber die Fragmente des Archytas, cap. 5, p. 61-63. About the gradual development of the Pythagorean doctrine, see Brandis, Handbuch der Gr.-R. Philos. s. 74, 75.