Daniel Malthus urged his son when at college to be most diligent in the cultivation of knowledge, but he also enjoined him to pursue manly sports as the best means of keeping up the full working power of his mind, as well as of enjoying the pleasures of intellect. “Every kind of knowledge,” said he, “every acquaintance with nature and art, will amuse and strengthen your mind, and I am perfectly pleased that cricket should do the same by your arms and legs; I love to see you excel in exercises of the body, and I think myself that the better half, and much the most agreeable part, of the pleasures of the mind is best enjoyed while one is upon one’s legs.” But a still more important use of active employment is that referred to by the great divine, Jeremy Taylor. “Avoid idleness,” he says, “and fill up all the spaces of thy time with severe and useful employment; for lust easily creeps in at those emptinesses where the soul is unemployed and the body is at ease; for no easy, healthful, idle person was ever chaste if he could be tempted; but of all employments bodily labour is the most useful, and of the greatest benefit for driving away the devil.” Practical success in life depends more upon physical health than is generally imagined. Hodson, of Hodson’s Horse, writing home to a friend in England, said, “I believe, if I get on well in India, it will be owing, physically speaking, to a sound digestion.” The capacity for continuous working in any calling must necessarily depend in a great measure upon this; and hence the necessity for attending to health, even as a means of intellectual labour. It is perhaps to the neglect of physical exercise that we find amongst students so frequent a tendency towards discontent, unhappiness, inaction, and reverie,—displaying itself in contempt for real life and disgust at the beaten tracks of men,—a tendency which in England has been called Byronism, and in Germany Wertherism. Dr. Channing noted the same growth in America, which led him to make the remark, that “too many of our young men grow up in a school of despair.” The only remedy for this green-sickness in youth is physical exercise—action, work, and bodily occupation.