Nevertheless, when we declare the miracles which God has wrought, or will yet work, and which we cannot bring under the very eyes of men, sceptics keep demanding that we shall explain these marvels to reason. And because we cannot do so, inasmuch as they are above human comprehension, they suppose we are speaking falsely. These persons themselves, therefore, ought to account for all these marvels which we either can or do see. And if they perceive that this is impossible for man to do, they should acknowledge that it cannot be concluded that a thing has not been or shall not be because it cannot be reconciled to reason, since there are things now in existence of which the same is true. I will not, then, detail the multitude of marvels which are related in books, and which refer not to things that happened once and passed away, but that are permanent in certain places, where, if any one has the desire and opportunity, he may ascertain their truth; but a few only I recount. The following are some of the marvels men tell us:—The salt of Agrigentum in Sicily, when thrown into the fire, becomes fluid as if it were in water, but in the water it crackles as if it were in the fire. The Garamantæ have a fountain so cold by day that no one can drink it, so hot by night no one can touch it. In Epirus, too, there is a fountain which, like all others, quenches lighted torches, but, unlike all others, lights quenched torches. There is a stone found in Arcadia, and called asbestos, because once lit it cannot be put out. The wood of a certain kind of Egyptian fig-tree sinks in water, and does not float like other wood; and, stranger still, when it has been sunk to the bottom for some time, it rises again to the surface, though nature requires that when soaked in water it should be heavier than ever. Then there are the apples of Sodom, which grow indeed to an appearance of ripeness, but, when you touch them with hand or tooth, the peel cracks, and they crumble into dust and ashes. The Persian stone pyrites burns the hand when it is tightly held in it, and so gets its name from fire. In Persia, too, there is found another stone called selenite, because its interior brilliancy waxes and wanes with the moon. Then in Cappadocia the mares are impregnated by the wind, and their foals live only three years. Tilon, an Indian island, has this advantage over all other lands, that no tree which grows in it ever loses its foliage.