Odysseus and Agamemnon, neither will he remain at Troy; but, says he,--

'To-morrow, when I have offered sacrifices to Zeus and all the Gods, having
loaded my ships well, I will drag them down into the deep; and then you
shall see, if you have a mind, and if such things are a care to you, early
in the morning my ships sailing over the fishy Hellespont, and my men
eagerly plying the oar; and, if the illustrious shaker of the earth gives
me a good voyage, on the third day I shall reach the fertile Phthia.'

And before that, when he was reviling Agamemnon, he said,--

'And now to Phthia I will go, since to return home in the beaked ships is
far better, nor am I inclined to stay here in dishonour and amass wealth
and riches for you.'

But although on that occasion, in the presence of the whole army, he spoke
after this fashion, and on the other occasion to his companions, he appears
never to have made any preparation or attempt to draw down the ships, as if
he had the least intention of sailing home; so nobly regardless was he of
the truth. Now I, Hippias, originally asked you the question, because I
was in doubt as to which of the two heroes was intended by the poet to be
the best, and because I thought that both of them were the best, and that
it would be difficult to decide which was the better of them, not only in
respect of truth and falsehood, but of virtue generally, for even in this
matter of speaking the truth they are much upon a par.

HIPPIAS: There you are wrong, Socrates; for in so far as Achilles speaks
falsely, the falsehood is obviously unintentional. He is compelled against
his will to remain and rescue the army in their misfortune. But when
Odysseus speaks falsely he is voluntarily and intentionally false.