 If we accept this much, then, by further chaining, it looks as if we have a quotation or at least paraphrase of Speusippus’ views concerning the One, plurality, the numbers, and even geometrical objects in a chapter of the De communi mathematica scientia (On Mathematical Science in General, hereafter DCMS) of  Iamblichus (3rd century C.E.). Iamblichus was a student of Porphyry, who was in turn a student of Plotinus: this is the beginning of Neoplatonism, and there are many resemblances as well as differences between Neoplatonism and Speusippus’ views. But a case has been made (Merlan 1968) for the idea that chapter iv of DCMS contains paraphrase if not quotation from Speusippus.