12. Further, it is more difficult to discern clearly, whether the will which connects the vision to the memory is not either the parent or the offspring of some one of them; and the likeness and equality of the same nature and substance cause this difficulty of distinguishing. For it is not possible to do in this case, as with the sense that is formed from without (which is easily discerned from the sensible body, and again the will from both), on account of the difference of nature which is mutually in all three, and of which we have treated sufficiently above. For although this trinity, of which we at present speak, is introduced into the mind from without; yet it is transacted within, and there is no part of it outside of the nature of the mind itself. In what way, then, can it be demonstrated that the will is neither the quasi-parent, nor the quasi-offspring, either of the corporeal likeness which is contained in the memory, or of that which is copied thence in recollecting; when it so unites both in the act of conceiving, as that they appear singly as one, and cannot be discerned except by reason? It is then first to be considered that there cannot be any will to remember, unless we retain in the recesses of the memory either the whole, or some part, of that thing which we wish to remember. For the very will to remember cannot arise in the case of a thing which we have forgotten altogether and absolutely; since we have already remembered that the thing which we wish to remember is or has been, in our memory. For example, if I wish to remember what I supped on yesterday, either I have already remembered that I did sup, or if not yet this, at least I have remembered something about that time itself, if nothing else; at all events, I have remembered yesterday, and that part of yesterday in which people usually sup, and what supping is. For if I had not remembered anything at all of this kind, I could not wish to remember what I supped on yesterday. Whence we may perceive that the will of remembering proceeds, indeed, from those things which are retained in the memory, with the addition also of those which, by the act of discerning, are copied thence through recollection; that is, from the combination of something which we have remembered, and of the vision which was thence wrought, when we remembered, in the mind’s eye of him who thinks. But the will itself which unites both requires also some other thing, which is, as it were, close at hand, and adjacent to him who remembers. There are, then, as many trinities of this kind as there are remembrances; because there is no one of them wherein there are not these three things, viz. that which was stored up in the memory also before it was thought, and that which takes place in the conception when this is discerned, and the will that unites both, and from both and itself as a third, completes one single thing. Or is it rather that we so recognize some one trinity in this kind, as that we are to speak generally, of whatever corporeal species lie hidden in the memory, as of a single unity, and again of the general vision of the mind which remembers and conceives such things, as of a single unity, to the combination of which two there is to be joined as a third the will that combines them, that this whole may be a certain unity made up from three?