Analysis of desire thus reveals the falsity of theories which magnify it at the expense of intelligence. Impulse is primary and intelligence is secondary and in some sense derivative. There should be no blinking of this fact. But recognition of it as a fact exalts intelligence. For thought is not the slave of impulse to do its bidding. Impulse does not know what it is after; it cannot give orders, not even if it wants to. It rushes blindly into any opening it chances to find. Anything that expends it, satisfies it. One outlet is like another to it. It is indiscriminate. Its vagaries and excesses are the stock theme of classical moralists; and while they point the wrong moral in urging the abdication of impulse in favor of reason, their characterization of impulse is not wholly wrong. What intelligence has to do in the service of impulse is to act not as its obedient servant but as its clarifier and liberator. And this can be accomplished only by a study of the conditions and causes, the workings and consequences of the greatest possible variety of desires and combinations of desire. Intelligence converts desire into plans, systematic plans based on assembling facts, reporting events as they happen, keeping tab on them and analyzing them. Nothing is so easy to fool as impulse and no one is deceived so readily as a person under strong emotion. Hence the idealism of man is easily brought to naught. Generous impulses are aroused; there is a vague anticipation, a burning hope, of a marvelous future. Old things are to pass speedily away and a new heavens and earth are to come into existence. But impulse burns itself up. Emotion cannot be kept at its full tide. Obstacles are encountered upon which action dashes itself into ineffectual spray. Or if it achieves, by luck, a transitory success, it is intoxicated, and plumes itself on victory while it is on the road to sudden defeat. Meantime, other men, not carried away by impulse, use established habits and a shrewd cold intellect that manipulates them. The outcome is the victory of baser desire directed by insight and cunning over generous desire which does not know its way. The realistic man of the world has evolved a regular technique for dealing with idealistic outbursts that threaten his supremacy. His aims are low, but he knows the means by which they are to be executed. His knowledge of conditions is narrow but it is effective within its confines. His foresight is limited to results that concern personal success, but is sharp, clearcut. He has no great difficulty in drafting the idealistic desire of others with its vague enthusiasms and its cloudy perceptions into canals where it will serve his own purposes. The energies excited by emotional idealism run into the materialistic reservoirs provided by the contriving thought of those who have not surrendered their minds to their sentiment.