Man is the highest expression yet discovered of the “living organism,” and sleep has always taken more of his time than any other function. Marie de Manacéïne of St. Petersburg, in her great book called “Sleep,” says: “The weaker the consciousness is, the more easily it is fatigued and in need of sleep; an energetic consciousness, on the contrary, is contented with periods of sleep that are shorter, less deep, and less frequent.” Although the consciousness of the race has developed and strengthened enormously, and is steadily strengthening itself, the old-fashioned idea that one-third of our time should be spent in sleep holds the average mind as strongly as ever. We insist upon it for the young, impress it upon everybody, and look distrustfully upon him who is so daring and unreasonable as to say that he requires less than eight hours of sleep. When an idea is intrenched in the mind it is next to impossible to drive it out by reason or even by repetition. It is the popular belief that Alfred the Great—who is also Alfred the Wise and Alfred the Good (being dead so long)—divided time into three equal parts, and taught that one part should be given to sleep. If he had said this, it would not follow that it is the last and wisest word on the best way to divide our time, but he did not say it. What he said was that one-third of each day should be given to sleep, diet and exercise: that is, that a man should devote eight hours to sleeping, eating and whatever form of exercise or recreation he desired. There is nothing to show that Alfred spent even six hours in sleep, although there is plenty of proof that he recognized the difference between rest and sleep, for he gave the second division of the day—eight hours—to study and to reflection, while the remaining eight hours were to be for business. In those days kings worked hard. Sir Henry Sumner Maine says that the list of places where King John held court shows that even he was as active as any commercial traveler nowadays. (“Early Law and Custom,” p. 183.) But the superstition that Alfred recommended eight hours for sleep will not down, and no amount of argument or proof will change the opinion of the average man on this point. “Our forefathers slept eight hours,” they say; “so should we.” We forget that probably the rushlight and the candle had much to do with the long hours of sleep in olden times. As artificial light has improved, sleeping-time has been shortened. There is an old English quatrain which runs: “Nature requires five, Custom gives seven, Laziness takes nine And wickedness eleven.”