Pythagoras and his earliest successors do not appear to have committed any of their doctrines to writing. According to Porphyrius (Vit. Pyth. p. 40)
Lysis and
Archippus collected in a written form some of the principal Pythagorean doctrines, which were handed down as heirlooms in their families, under strict injunctions that they should not be made public. But amid the different and inconsistent accounts of the matter, the first publication of the Pythagorean doctrines is pretty uniformly attributed to Philolaus. In one source,
Diogenes Laërtius speaks of Philolaus composing one book, but elsewhere he speaks of three books, as do
Aulus Gellius and
Iamblichus. It might have been one treatise divided into three books. Plato is said to have procured a copy of his book. Later, it was claimed that Plato composed much of his
Timaeus based upon the book by Philolaus. One of the works of Philolaus was called
On Nature. Other writers refer to a work entitled
Bacchae, which may have been another name for the same work, and which may originate from
Arignote. However, it has been mentioned that
Proclus describes the
Bacchae as a book for teaching theology by means of mathematics. Out of the materials which he derived from these books Plato is said to have composed his
Timaeus. But in the age of Plato the leading features of the Pythagorean doctrines had long ceased to be a secret; and if Philolaus taught the Pythagorean doctrines at
Thebes, he was hardly likely to feel much reluctance in publishing them; and amid the conflicting and improbable accounts preserved in the authorities above referred to, little more can be regarded as trustworthy, except that Philolaus was the first who published a book on the Pythagorean doctrines, and that Plato read and made use of it. Historians from the
Stanford Encyclopedia of Philosophy, Chapter ''Philolaus' Book: Genuine Fragments and Testimonia'', noted the following: ==Philosophy==