Nicene and Post-Nicene Fathers: Series I/Volume I/Confessions/Book XI/Chapter 18
Chapter XVIII.—Past and Future Times Cannot Be Thought of But as Present.
23. Suffer me, O Lord, to seek further; O my Hope, let not my purpose be confounded. For if there are times past and future, I desire to know where they are. But if as yet I do not succeed, I still know, wherever they are, that they are not there as future or past, but as present. For if there also they be future, they are not as yet there; if even there they be past, they are no longer there. Wheresoever, therefore, they are, whatsoever they are, they are only so as present. Although past things are related as true, they are drawn out from the memory,—not the things themselves, which have passed, but the words conceived from the images of the things which they have formed in the mind as footprints in their passage through the senses. My childhood, indeed, which no longer is, is in time past, which now is not; but when I call to mind its image, and speak of it, I behold it in the present, because it is as yet in my memory. Whether there be a like cause of foretelling future things, that of things which as yet are not the images may be perceived as already existing, I confess, my God, I know not. This certainly I know, that we generally think before on our future actions, and that this premeditation is present; but that the action whereon we premeditate is not yet, because it is future; which when we shall have entered upon, and have begun to do that which we were premeditating, then shall that action be, because then it is not future, but present.
24. In whatever manner, therefore, this secret preconception of future things may be, nothing can be seen, save what is. But what now is is not future, but present. When, therefore, they say that things future are seen, it is not themselves, which as yet are not (that is, which are future); but their causes or their signs perhaps are seen, the which already are. Therefore, to those already beholding them, they are not future, but present, from which future things conceived in the mind are foretold. Which conceptions again now are, and they who foretell those things behold these conceptions present before them. Let now so multitudinous a variety of things afford me some example. I behold daybreak; I foretell that the sun is about to rise. That which I behold is present; what I foretell is future,—not that the sun is future, which already is; but his rising, which is not yet. Yet even its rising I could not predict unless I had an image of it in my mind, as now I have while I speak. But that dawn which I see in the sky is not the rising of the sun, although it may go before it, nor that imagination in my mind; which two are seen as present, that the other which is future may be foretold. Future things, therefore, are not as yet; and if they are not as yet, they are not. And if they are not, they cannot be seen at all; but they can be foretold from things present which now are, and are seen.