And yet the school of Aristotle Cf. Aristotle, Meteorologica , i. 3 (340 b 29); Cicero, De Divinatione , i. 19 (38); ii. 57 (117). would make it appear that exhalation is the author of all these changes that have taken place in the earth, and that things of this nature must of necessity follow with it in disappearing, changing their locality, and bursting forth once more in full vigour. Plainly the same sober opinion is to be held regarding the spirits that inspire prophecy; the power that they possess is not everlasting and ageless, but is subject to changes. For excessive rains most likely extinguish them, and they probably are dispersed by thunderbolts, and especially, when the earth is shaken beneath by an earthquake and suffers subsidence and ruinous confusion in its depths, the exhalations shift their site or find completely blind outlets, as in this place they say that there are still traces of that great earthquake which overthrew the city. And in Orchomenos they relate that a pestilence raged and many persons died of it, and the oracle of Teiresias become altogether obsolescent and even to this day remains idle and mute. And if a like fate has befallen those in Cilicia, as we have been told, there is nobody, Demetrius, who could give us more certain information than you. I do not know, said Demetrius, the state of affairs there at present; for as you all know, I have been out of the country for a long time now. But, when I was there, both the oracle of Mopsus and that of Amphilochus were still flourishing. I have a most amazing thing to tell as the result of my visit to the oracle of Mopsus. The ruler of Cilicia was himself still of two minds towards religious matters. This, I think, was because his scepticism lacked conviction, for in all else he was an arrogant and contemptible man. Since he kept about him certain Epicureans, who, because of their admirable naturestudies, forsooth, have an arrogant contempt, as they themselves aver, Frag. 395 Usener; Diogenes Laertius, x. 135. for all such things as oracles, he sent in a freedman, like a spy into the enemy’s territory, arranging that he should have a sealed tablet, on the inside of which was written the inquiry without anyone’s knowing what it was. The man accordingly, as is the custom, passed the night in the sacred precinct and went to sleep, and in the morning reported a dream in this fashion: it seemed to him that a handsome man stood beside him who uttered just one word Black and nothing more, and was gone immediately. The thing seemed passing strange to us, and raised much inquiry, but the ruler was astounded and fell down and worshipped; then opening the tablet he showed written there the question: Shall I sacrifice to you a white bull or a black? The result was that the Epicureans were put to confusion, and the ruler himself not only duly performed the sacrifice, but ever after revered Mopsus.