"XI. And some people, (of whom Satyrus is…" — Diogenes Laertius (#c1533)

Card #c1533IR // #c1533Synthesis

XI. And some people, (of whom Satyrus is one,) say that he sent a commission to Sicily to Dion, to buy him three books of Pythagoras from Philolaus for a hundred minæ; for they say that he was in very easy circumstances, having received from Dionysius more than eighty talents [...] [Book VIII, Life of Pythagoras, XV:] [...] but until the time of Philolaus there were no doctrines of Pythagoras ever divulged; and he was the first person who published the three celebrated books which Plato wrote to have purchased for him for a hundred minæ. [...] [Life of Empedocles, II:] Neanthes relates, that till the time of Philolaus and Empedocles, the Pythagoreans used to admit all persons indiscriminately into their school; but when Empedocles made their doctrines public by means of his poems, then they made a law to admit no Epic poet. And they say that the same thing happened to Plato; for that he too was excluded from the school. [...] [Life of Philolaus, IV:] Demetrius, in his treatise on people of the same name, says that he was the first of the Pythagoreans who wrote a treatise on Natural Philosophy; and it begins thus:— / “But nature in the world has been composed of bodies infinite and finite, and so is the whole world and all that is in it.” — Diogenes Laertius, *Lives of Eminent Philosophers*, Book III.XI & Book VIII (Pythagoras XV, Empedocles II, Philolaus IV), trans. C. D. Yonge (1853). **Surface Gloss:** Across both books, Diogenes tracks the moment Pythagorean oral secrecy broke: unlike Pythagoras's daughter Damo (who refused to sell her father's notebooks despite poverty), Philolaus published the first written Pythagorean treatise ("of bodies infinite and finite"), which Plato bought for a small fortune to build his *Timaeus*. **The Philolaus Pivot (From Vault Secrecy to Encrypted Publication):** Pure oral or vault secrecy (Damo's strategy) works for two generations, then a single political catastrophe wipes out the lineage. When an oral guild faces extinction or dispersion, pivot to Philolaus and Plato's strategy: commit the core generative axioms ("the infinite and the finite") to durable, high-value text, price or position it for serious successors, and encode it so only practitioners who do the math can unpack it.

— In our words · Source: Lives of Eminent Philosophers (Diogenes Laertius)

[Use when]

Use when deciding whether to keep proprietary knowledge locked inside an aging inner circle or to codify and publish it so the lineage survives institutional turnover. ---

[Why it matters]

Across both books, Diogenes tracks the moment Pythagorean oral secrecy broke: unlike Pythagoras's daughter Damo (who refused to sell her father's notebooks despite poverty), Philolaus published the first written Pythagorean treatise ("of bodies infinite and finite"), which Plato bought for a small fortune to build his *Timaeus*. Diogenes weaves a cross-referenced transmission history connecting Book III and Book VIII (citing Satyrus, Neanthes, Hermippus, Demetrius of Magnesia, and the pseudepigraphic letter of Lysis to Hipparchus at VIII.22). For generations, the Italic school maintained strict oral containment: Damo, Pythagoras's daughter, guarded his *hypomnemata* under house-lock despite poverty (VIII.22). The seal broke in two stages: first when Empedocles broadcast cathartic and physical doctrines in public hexameters (triggering a ban on epic poets), and second when the Crotoniate exile Philolaus—survivor of the anti-Pythagorean burnings—published the first authentic written book of Pythagorean natural philosophy, opening with the famous incipit on *apeira* (infinite/unlimited) and *perainonta* (finite/limiting bodies). Hellenistic biographers used the story of Plato paying 100 minae (or 40 Alexandrian minae) for Philolaus’s book—sometimes maliciously claiming he simply copied the *Timaeus* from it (Timon's satire)—to explain how Italic mathematical cosmology entered the Athenian Academy. [INTERPRETATION: PRISCA THEOLOGIA / ESOTERIC] In the history of Western esotericism, the transaction between Philolaus and Plato is the hinge-point of the *prisca theologia*. Had Damo’s rule of absolute domestic secrecy held forever, the anti-Pythagorean pogroms at Crotona and Tarentum (VIII.21) would have extinguished the Italic wisdom completely when the last oral initiates died out (whom Aristoxenus names at VIII.24). By committing the doctrine of the Infinite and the Finite (*apeiron kai peras*) to parchment and selling or gifting it to Plato, Philolaus transferred the ark of Pythagorean number-cosmology just before the Italic brotherhood went extinct. Plato then re-veiled those doctrines inside the mythical-mathematical fabric of the *Timaeus* and the *Philebus*, ensuring that the secret survived not by hiding in a basement, but by being encrypted in high philosophical literature.

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