Memory is, among the faculties of the human mind, that of which we make the most frequent use, or rather that of which the agency is incessant, or perpetual. Memory is the primary and fundamental power, without which there could be no other intellectual operation. Judgment and ratiocination suppose something already known, and draw their decisions only from experience. Imagination selects ideas from the treasures of remembrance, and produces novelty only by varied combinations. We do not even form conjectures of distant, or anticipations of future events, but by concluding what is possible from what is past. The two offices of memory are collection and distribution; by one images are accumulated, and by the other produced for use. Collection is always the employment of our first years; and distribution commonly that of our advanced age. To collect and reposite the various forms of things, is far the most pleasing part of mental occupation. We are naturally delighted with novelty, and there is a time when all that we see is new. When first we enter into the world, whithersoever we turn our eyes, they meet knowledge with pleasure at her side; every diversity of nature pours ideas in upon the soul; neither search nor labour are necessary; we have nothing more to do than to open our eyes, and curiosity is gratified. Much of the pleasure which the first survey of the world affords, is exhausted before we are conscious of our own felicity, or able to compare our condition with some other possible state. We have, therefore, few traces of the joy of our earliest discoveries; yet we all remember a time, when nature had so many untasted gratifications, that every excursion gave delight which, can now be found no longer, when the noise of a torrent, the rustle of a wood, the song of birds, or the play of lambs, had power to fill the attention, and suspend all perception of the course of time. But these easy pleasures are soon at an end; we have seen in a very little time so much, that we call out for new objects of observation, and endeavour to find variety in books and life. But study is laborious, and not always satisfactory; and conversation has its pains as well pleasures; we are willing to learn, but not willing to be taught; we are pained by ignorance, but pained yet more by another's knowledge. From the vexation of pupilage men commonly set themselves free about the middle of life, by shutting up the avenues of intelligence, and resolving to rest in their present state; and they, whose ardour of inquiry continues longer, find themselves insensibly forsaken by their instructors. As every man advances in life, the proportion between those that are younger and that are older than himself is continually changing; and he that has lived half a century finds few that do not require from him that information which he once expected from those that went before him.