Note 58 — Chapter XXVII · PARMENIDES.
Reading edition
Plato, Symposion, p. 220 C-D: compare pp. 174-175.
In the dialogue Parmenides (p. 130 E), Parmenides himself is introduced as predicting that the youthful Sokrates will become more and more absorbed in philosophy as he advances in years.
Proklus observes in his commentary on the dialogue — ὁ γὰρ Σωκράτης ἄγαται τὰς ἀπορίας, &c. (L. v. p. 252).