Memory is the receptacle and case of science: and therefore mine being so treacherous, if I know little, I cannot much complain. I know, in general, the names of the arts, and of what they treat, but nothing more. I turn over books; I do not study them. What I retain I no longer recognise as another's; 'tis only what my judgment has made its advantage of, the discourses and imaginations in which it has been instructed: the author, place, words, and other circumstances, I immediately forget; and I am so excellent at forgetting, that I no less forget my own writings and compositions than the rest. I am very often quoted to myself, and am not aware of it. Whoever should inquire of me where I had the verses and examples, that I have here huddled together, would puzzle me to tell him, and yet I have not borrowed them but from famous and known authors, not contenting myself that they were rich, if I, moreover, had them not from rich and honourable hands, where there is a concurrence of authority with reason. It is no great wonder if my book run the same fortune that other books do, if my memory lose what I have written as well as what I have read, and what I give, as well as what I receive. Besides the defect of memory, I have others which very much contribute to my ignorance; I have a slow and heavy wit, the least cloud stops its progress, so that, for example, I never propose to it any never so easy a riddle that it could find out; there is not the least idle subtlety that will not gravel me; in games, where wit is required, as chess, draughts, and the like, I understand no more than the common movements. I have a slow and perplexed apprehension, but what it once apprehends, it apprehends well, for the time it retains it. My sight is perfect, entire, and discovers at a very great distance, but is soon weary and heavy at work, which occasions that I cannot read long, but am forced to have one to read to me. The younger Pliny can inform such as have not experimented it themselves, how important an impediment this is to those who devote themselves to this employment.