However, it was rather his love of distinction and love of fame to which his corrupters appealed, and thereby plunged him all too soon into ways of presumptuous scheming, persuading him that he had only to enter public life, and he would straightway cast into total eclipse the ordinary generals and public leaders, and not only that, he would even surpass Pericles in power and reputation among the Hellenes. Accordingly, just as iron, which has been softened in the fire, is hardened again by cold water, and has its particles compacted together, so Alcibiades, whenever Socrates found him filled with vanity and wantonness, was reduced to shape by the Master's discourse, and rendered humble and cautious. He learned how great were his deficiencies and how incomplete his excellence.
...
At all events, in Sparta, so far as the outside was concerned, it was possible to say of him, “ 'No child of Achilles he, but Achilles himself,’ (unknown poet) such a man as Lycurgus trained"; but judging by what he actually felt and did, one might have cried with the poet, " 'Tis the selfsame woman still!” (Electra, Euripides)
...
And it would seem that if ever a man was ruined by his own exalted reputation, that man was Alcibiades. His continuous successes gave him such repute for unbounded daring and sagacity, that when he failed in anything, men suspected his inclination; they would not believe in his inability. Were he only inclined to do a thing, they thought, naught could escape him.