Sometimes people, wishing to improve a weak memory, attempt to memorize more and more, but [. . . text missing; suggest: "it is not through artificial exercise of the memory"] faculty that the faculty develops. Very often we remember things which are useless. There are many things which it is not necessary to remember, and in trying to do so we make our memory tired with those thoughts; consequently, it is not free to remember other, more important things. It is no longer open; it becomes limited; it closes itself with the thoughts it has in it, and this may even develop insanity. The best advice in regard to memory is to forget all the disagreeable things of the past, and only to remember the most beautiful ones.