The activity of Alexander disconcerted all these movements. Having marched through Thessaly, he assembled the Amphictyonic council at Thermopylae, who conferred upon him the command with which they had invested his father during the Sacred War. He then advanced rapidly upon Thebes, and thus prevented the meditated revolution, The Athenians sent ambassadors to deprecate his wrath, who were graciously accepted. He then convened a general congress at Corinth, where he was appointed generalissimo for the Persian war in place of his father. Most of the philosophers and persons of note near Corinth came to congratulate him on this occasion; but Diognes of Sinope who was then living in one of the suburbs of Corinth, did not make his appearance. Alexander therefore resolved to pay a visit to the eccentric cynic, whom he found basking in the sun. On the approach of Alexander with a numerous retinue, Diogenes raised himself up a little, and the monarch affably inquired how he could serve him? "By standing out of my sunshine," replied the churlish philosopher. Alexander was stung with surprise at a behaviour to which he was so little accustomed; but whilst his courtiers were ridiculing the manners of the cynic, he turned to them and said, "Were I not Alexander, I should like to be Diogenes." The result of the Congress might be considered a settlement of the affairs of Greece. Alexander then returned to Macedonia in the hope of being able to begin his Persian expedition in the spring of B.C. 335; but reports of disturbances among the Thracians and Triballians diverted his attention to that quarter. He therefore crossed Mount Haemus (the Balkan) and marched into the territory of the Triballians, defeated their forces, and pursued them to the Danube, which he crossed. After acquiring a large booty he regained the banks of the Danube, and thence marched against the Illyrians and Taulantians, whom he speedily reduced to obedience.