By the power of memory, a thing formerly seen may be recalled to the mind with different degrees of accuracy. We commonly are satisfied with a slight recollection of the chief circumstances; and, in such recollection, the thing is not figured as present nor any image formed. I retain the consciousness of my present situation, and barely remember that formerly I was a spectator. But with respect to an interesting object or event which made a strong impression, the mind sometimes, not satisfied with a cursory review, chutes to revolve every circumstance. In this case, I conceive myself to be a spectator as I was originally; and I perceive every particular passing in my presence, in the same manner as when I was in reality a spectator. For example, I saw yesterday a beautiful woman in tears for the loss of an only child, and was greatly moved with her distress. Not satisfied with a slight recollection or bare remembrance, I insist on the melancholy scene. Conceiving myself to be in the place where I was an eye-witness, every circumstance appears to me as at first. I think I see the woman in tears and hear her moans. Hence it may be justly said, that in a complete idea of memory there is no past nor future. A thing recalled to the mind with the accuracy I have been describing, is perceived as in our view, and consequently as presently existing. Past time makes a part of an incomplete idea only: I remember or reflect, that some years ago I was at Oxford, and saw the first stone laid of the Ratcliff library; and I remember that at a still greater distance of time, I heard a debate in the house of Commons about a standing army. Lamentable is the imperfection of language, almost in every particular that falls not under external sense. I am talking of a matter exceeding clear in itself, and of which every person must be conscious; and yet I find no small difficulty to express it clearly in words; for it is not accurate to talk of incidents long past as passing in our sight, nor of hearing at present what we really heard yesterday or perhaps a year ago. To this necessity I am reduced, by want of proper words to describe ideal presence and to distinguish it from real presence. And thus in the description, a plain subject becomes obscure and intricate. When I recall any thing in the distinctest manner, so as to form an idea or image of it as present; I have not words to describe this act, other than that I perceive the thing as a spectator, and as existing in my presence. This means not that I am really a spectator; but only that I conceive myself to be a spectator, and have a consciousness of presence similar to what a real spectator hath.