books.google.co.uk - "The arguments for the authenticity of the Letter of Speusippus are re-evaluated. In what is a radical reassessment, it is argued that the letter is best interpreted in the context of events that took place during the reign of Perdiccas III. The 31st Socratic letter (likely to be a genuine work of Plato)...http://books.google.co.uk/books/about/The_Letter_of_Speusippus_to_Philip_II.html?id=6oe9HE_6HSUC&utm_source=gb-gplus-shareThe Letter of Speusippus to Philip II
