The Habit of exercise is a sacred duty. All feel the effects of systematic neglect of fresh air and muscular training, and most young men and boys do take exercise spasmodically--one day a great deal, and the next, perhaps, none at all. The bodily system can no more flourish under that sort of treatment than it could if one were to over-eat on one day, and go absolutely without on the next. The only way to bring the body to a high state of cultivation and to keep it there is to form the habit of exercise, and let nothing interfere with it. It need not be always the same; it should be varied; but it should always be active. If a boy does not care for very violent exercise, he can substitute for it light gymnasium work, or club and dumb-bell exercise. The great Sandow says that he keeps his strength up to the point of efficiency by clubs and dumb-bells, and open-air exercise. The great thing about it is regularity; that is to say, Habit. Another great factor of success in life is the Habit of early rising. We all love to lie in bed a little longer than we ought; but we should fight against it. Mr. Gladstone, throughout his years of vigour, took seven hours sleep, and he said to a friend: "I should like to have eight; I hate getting up in the morning, and I hate it the same every morning. But one can do anything by habit, and when I have had my seven hours sleep my habit is to get up." King George III. was an early riser. He once said to a man who came late: "Six hours sleep enough for a man, seven for a woman, and eight for a fool." Dickens use to rise at seven, have a cold bath, "and then blaze away till three o'clock." Kant, the greatest philosopher of modern times, used to retire at ten, and his servant had strict orders never to allow him to sleep later than five, no matter how strongly he might plead for rest. Sir Walter Scott said: "God bless that habit of getting up at seven. I could do nothing without it." The Duke of Wellington said that when we turn in bed it is time to turn out. The wise boy will form habits of reading good books regularly, especially the Bible; of exact and strict punctuality in all his engagements, great or small; of neatness in his appearance; of personal cleanliness; of politeness of speech. A Habit once learned will stick to one, whether good or bad. "Habit at first is but a silken thread.... Beware! that thread may bind thee as a chain." No. XVI. INDUSTRY +Industry is the fully formed habit of work. It is that which prevents us from wasting time, and strength, and the powers of mind. Its opposite is Indolence, or Laziness.+ Work is a fundamental law of life. He who does not work must suffer, whether he be rich or poor, because man cannot break any law of nature without paying the penalty. If a man deliberately sin against nature, that is, against God, he may be forgiven, but he cannot escape the result, or, in other words, the punishment.