Again, let us consider the wonders of lime; for besides growing white in fire, which makes other things black, and of which I have already said enough, it has also a mysterious property of conceiving fire within it. Itself cold to the touch, it yet has a hidden store of fire, which is not at once apparent to our senses, but which experience teaches us, lies as it were slumbering within it even while unseen. And it is for this reason called “quick lime,” as if the fire were the invisible soul quickening the visible substance or body. But the marvellous thing is, that this fire is kindled when it is extinguished. For to disengage the hidden fire the lime is moistened or drenched with water, and then, though it be cold before, it becomes hot by that very application which cools what is hot. As if the fire were departing from the lime and breathing its last, it no longer lies hid, but appears; and then the lime lying in the coldness of death cannot be requickened, and what we before called “quick,” we now call “slaked.” What can be stranger than this? Yet there is a greater marvel still. For if you treat the lime, not with water, but with oil, which is as fuel to fire, no amount of oil will heat it. Now if this marvel had been told us of some Indian mineral which we had no opportunity of experimenting upon, we should either have forthwith pronounced it a falsehood, or certainly should have been greatly astonished. But things that daily present themselves to our own observation we despise, not because they are really less marvellous, but because they are common; so that even some products of India itself, remote as it is from ourselves, cease to excite our admiration as soon as we can admire them at our leisure.1492
The diamond is a stone possessed by many among ourselves, especially by jewellers and lapidaries, and the stone is so hard that it can be wrought neither by iron nor fire, nor, they say, by anything at all except goat’s blood. But do you suppose it is as much admired by those who own it and are familiar with its properties as by those to whom it is shown for the first time? Persons who have not seen it perhaps do not believe what is said of it, or if they do, they wonder as at a thing beyond their experience; and if they happen to see it, still they marvel because they are unused to it, but gradually familiar experience [of it] dulls their admiration. We know that the loadstone has a wonderful power of attracting iron. When I first saw it I was thunderstruck, for I saw an iron ring attracted and suspended by the stone; and then, as if it had communicated its own property to the iron it attracted, and had made it a substance like itself, this ring was put near another, and lifted it up; and as the first ring clung to the magnet, so did the second ring to the first. A third and a fourth were similarly added, so that there hung from the stone a kind of chain of rings, with their hoops connected, not interlinking, but attached together by their outer surface. Who would not be amazed at this virtue of the stone, subsisting as it does not only in itself, but transmitted through so many suspended rings, and binding them together by invisible links? Yet far more astonishing is what I heard about this stone from my brother in the episcopate, Severus bishop of Milevis. He told me that Bathanarius, once count of Africa, when the bishop was dining with him, produced a magnet, and held it under a silver plate on which he placed a bit of iron; then as he moved his hand with the magnet underneath the plate, the iron upon the plate moved about accordingly. The intervening silver was not affected at all, but precisely as the magnet was moved backwards and forwards below it, no matter how quickly, so was the iron attracted above. I have related what I myself have witnessed; I have related what I was told by one whom I trust as I trust my own eyes. Let me further say what I have read about this magnet. When a diamond is laid near it, it does not lift iron; or if it has already lifted it, as soon as the diamond approaches, it drops it. These stones come from India. But if we cease to admire them because they are now familiar, how much less must they admire them who procure them very easily and send them to us? Perhaps they are held as cheap as we hold lime, which, because it is common, we think nothing of, though it has the strange property of burning when water, which is wont to quench fire, is poured on it, and of remaining cool when mixed with oil, which ordinarily feeds fire.
V
That there are many things which reason cannot account for, and which are nevertheless true.
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
