With what other and what brighter radiance is the period of youth encircled!--that heavenly time of our first friendship and our first love,--of our first poem and our first philosophy,--of our first full enjoyment of nature and music and the drama,--of our first castles in the air, and our first vigorous training for active life. And this period is not simply irrecoverable,--that is the case with all past time,--but for the very reason that in its perfect bloom its only office is to minister to the fruits it so beautifully enfolds, it is the highest and the culminating period; for there is necessarily a greater productive force present in the process than in the results of development, in the flower of youth than in the ripeness of manhood. In his more advanced years, one is seldom led to enter upon a new path of knowledge or a higher moral life; but in his youth, one gives himself up, with inextinguishable fire, to some system of philosophy, or some total change in his moral life. It calls for more strength in a man to be converted than to stand still. As the highest bodily strength and the most perfect health, the probability of the longest life and the greatest beauty,--in short, the best bodily attributes,--belong to the period of youth, so, and for that very reason, the intellectual wealth which comes not by acquisition, but by inheritance, is the largest. Great attainments, experience, and skill are certainly the fruits of age and of labor; but what are these things, compared with the ideal enjoyments which come of the first sciences we study, when the tree of knowledge, grafted upon the tree of life, puts forth its branches,--compared with the delight with which the new truths of geometry, or of philosophy, or of any favorite science new-born to us, fill the soul? For even in science, however far its limits may be pushed, one is ever descending from the height of the ideal to the vulgar level of reality. Youth is the full moon, illumined by the magic light of the sun. Age is the new moon, upon which the day-earth (life) throws a meagre light. A DREAM OF A BATTLE-FIELD.