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The Unwritten Doctrines: Plato's Answer to Speusippus - http://personal-pages.kenyon.edu/~pepplej/
An essay by John Pepple, arguing that Plato's later works include a response to Speusippus' rejection of the Platonic forms. |
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Speusippus - http://plato.stanford.edu/entries/speusippus/
Article from the Stanford Encyclopedia of Philosophy by Russell Dancy. Reviews in depth what is known about his life and doctrines. |
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Lives of the Philosophers: Life of Speusippus - http://www.classicpersuasion.org/pw/diogenes/dlspeusippus.htm
Section on this ancient thinker by Diogenes Laertius, as translated by C.D. Yonge. |