We must be careful to bear in mind that knowledge and wisdom are not necessarily interchangeable terms; a man may have a far-reaching knowledge, and be a perfect encyclopædia of useful and useless facts, and yet be wofully deficient in wisdom. "Learning is but an adjunct to oneself," writes Shakespeare, in "Love's Labour's Lost," a sentence luminous and golden. We see the essential difference perhaps the better if we append to each its opposite--knowledge and ignorance, wisdom and folly. The fool has supplied material for countless proverbs. Solomon tells us that "A foolish son is the heaviness of his mother"; that "A prating fool shall fall"; that "It is as sport to a fool to do mischief"; that "The fool shall be servant to the wise of heart"; that "He that is soon angry dealeth foolishly"; that "Folly is joy to him that is destitute of wisdom"; that "He that begetteth a fool doeth it to his sorrow"; that "A fool returneth to his folly"; that "A fool uttereth all his mind"; that "Fools die for want of wisdom"; that "The legs of the lame are not equal, so is a parable in the mouth of fools";[201:A] while the writer of Ecclesiasticus says--"Weep for the dead, for he hath lost the light; and weep for the fool, for he wanteth understanding. Make little weeping for the dead, for he is at rest; but the life of the fool is worse than death. Seven days do men mourn for him that is dead, but for a fool all the days of his life." Many other Biblical references may very readily be found. In the domain of secular literature and proverb-lore the material at our service is equally lavish in amount and definite in its pity and scorn of these unfortunates. The following may be accepted as samples from the bulk: "Wise men learn more from fools than fools from wise men"; "Folly, as well as wisdom, is justified in its children"; "Little minds, like small beer, are soon soured"; "Wise men make jests, and fools repeat them"; "He is a fool who makes his fist a wedge"; "On the heels of folly shame treads"; "To promise and give nothing is a comfort to a fool"; "A foolish judge passes a quick sentence"; "A wise man shines, a fool would outshine"; "Cunning is the fool's substitute for wisdom"; "The fools wonder, wise men ask"; "A fool and his money are soon parted";[202:A] "The fool says, Who would have thought it?"; "Folly jumps into the river, and wonders why Fate lets him"; "Wit is folly, unless a wise man has the keeping of it"; "A fool can ask more questions than a wise man can answer, but a wise man cannot ask more questions than a fool is ready to answer"; "A fool shoots without taking aim." These proverbs are severe, but one feels, on full consideration of them, one after another, that there is not one that is exaggerated. They all describe people whom we have all met, and who are still living.