An old colored servant once told General Washington the secret of life in a few homely words. Said he, “Gin’ral, if you want a good night’s sleep, set up de night befo’.” In other words, if you desire keen senses and lively enjoyment in the commonplace acts which constitute nine-tenths of life, stint yourself. Give every normal want a reasonable gratification only. Moderation is the golden mean between indulgence and asceticism. A broad knowledge and general application of economics constitute the science of living. To illustrate: If you stint your diet, such food as you do take will be received gratefully by a stomach which has accumulated surplus energy. Every organ in the body will be eager and work hard for its supply of pabulum. Assimilation is therefore improved. A satisfied stomach means a healthy liver, regular bowels, sound and resistant nerves, dreamless and refreshing sleep. Just the right amount of exercise means a healthy degree of fatigue, even distribution of blood, and a relief of nervous tension, predisposing to rest and recuperation. Too much exercise causes active congestions and undue nervous exhaustion; too little exercise results in passive congestions and accumulative nervous irritability.—Medical Brief.