The effect of the destruction of Thebes upon the other cities and states of Greece was what might have been expected. It came upon them like a thunder-bolt. Although Thebes was the only city which had openly revolted, there had been strong symptoms of disaffection in many other places. Demosthenes, who had been silent while Alexander was present in Greece, during his first visit there, had again been endeavoring to arouse opposition to Macedonian ascendency, and to concentrate and bring out into action the influences which were hostile to Alexander. He said in his speeches that Alexander was a mere boy, and that it was disgraceful for such cities as Athens, Sparta, and Thebes to submit to his sway. Alexander had heard of these things, and, as he was coming down into Greece, through the Straits of Thermopylæ, before the destruction of Thebes, he said, "They say I am a boy. I am coming to teach them that I am a man."