The mind has a better secret in generalization than merely adding units to its list of facts. The reason of the short memory is shallow thought. As deep as the thought, so great is the attraction. An act of the understanding will marshal and concatenate a few facts; a principle of the reason will thrill and magnetize and redistribute the whole world. But defect of memory is not always want of genius. By no means. It is sometimes owing to excellence of genius. Thus men of great presence of mind who are always equal to the occasion do not need to rely on what they have stored for use, but can think in this moment as well and deeply as in any past moment, and if they cannot remember the rule they can make one. Indeed it is remarked that inventive men have bad memories. Sir Isaac Newton was embarrassed when the conversation turned on his discoveries and results; he could not recall them; but if he was asked why things were so or so he could find the reason on the spot. A man would think twice about learning a new science or reading a new paragraph, if he believed the magnetism was only a constant amount, and that he lost a word or a thought for every word he gained. But the experience is not quite so bad. In reading a foreign language, every new word mastered is a lamp lighting up related words and so assisting the memory. Apprehension of the whole sentence aids to fix the precise meaning of a particular word, and what familiarity has been acquired with the genius of the language and the writer helps in fixing the exact meaning of the sentence. So is it with every fact in a new science: they are mutually explaining, and each one adds transparency to the whole mass. The damages of forgetting are more than compensated by the large values which new thoughts and knowledge give to what we already know. If new impressions sometimes efface old ones, yet we steadily gain insight; and because all nature has one law and meaning,—part corresponding to part,—all we have known aids us continually to the knowledge of the rest of nature. Thus, all the facts in this chest of memory are property at interest. And who shall set a boundary to this mounting value? Shall we not on higher stages of being remember and understand our early history better? They say in Architecture, “An arch never sleeps;” I say, the Past will not sleep, it works still. With every new fact a ray of light shoots up from the long buried years. Who can judge the new book? He who has read many books. Who, the new assertion? He who has heard many the like. Who, the new man? He that has seen men. The experienced and cultivated man is lodged in a hall hung with pictures which every new day retouches, and to which every step in the march of the soul adds a more sublime perspective.