The prospect of penury in age is so gloomy and terrifying that every man who looks before him must resolve to avoid it; and it must be avoided generally by the science of sparing. For, though in every age there are some who, by bold adventures, or by favorable accidents, rise suddenly to riches, yet it is dangerous to indulge hopes of such rare events; and the bulk of mankind must owe their affluence to small and gradual profits, below which their expense must be resolutely reduced.