And now a general assembly of the Greeks was held at the Isthmus,
where a vote was passed to make an expedition against Persia with Alexander, and he was proclaimed their leader. Thereupon many statesmen and philosophers came to him with their congratulations, and he expected that Diogenes of Sinope also, who was tarrying in Corinth, would do likewise.
But since that philosopher took not the slightest notice of Alexander, and continued to enjoy his leisure in the suburb Craneion, Alexander went in person to see him; and he found him lying in the sun. Diogenes raised himself up a little when he saw so many persons coming towards him, and fixed his eyes upon Alexander. And when that monarch addressed him with greetings, and asked if he wanted anything, ‘Yes,’ said Diogenes,
‘stand a little out of my sun.’
It is said that Alexander was so struck by this, and admired so much the haughtiness and grandeur of the man who had nothing but scorn for him, that he said to his followers, who were laughing and jesting about the philosopher as they went away, ‘But verily, if I were not Alexander, I would be Diogenes.’
And now, wishing to consult the god concerning the expedition against Asia, he went to Delphi; and since he chanced to come on one of the inauspicious days, when it is not lawful to deliver oracles, in the first place he sent a summons to the prophetess. And when she refused to perform her office and cited the law in her excuse, he went up himself and tried to drag her to the temple, whereupon, as if overcome by his ardour, she said: ‘Thou art invincible, my son!’ On hearing this, Alexander said he desired no further prophecy, but had from her the oracle which he wanted.
Moreover, when he set out upon his expedition,
it appears that there were many signs from heaven, and, among them, the image of Orpheus at Leibethra (it was made of cypress-wood) sweated profusely at about that time. Most people feared the sign, but Aristander bade Alexander be of good cheer, assured that he was to perform deeds worthy of song and story, which would cost poets and musicians much toil and sweat to celebrate.