Fashion well illustrates the tentative growth of an impersonal form. Thus fashions in women’s dress are initiated, it appears, at Paris, this city having a great prestige in the matter which it has achieved by some centuries of successful leadership. In Paris there are a large number of professional designers of dress who are constantly endeavoring to foresee the course of change, and to produce designs that will “take.” They compete with one another in this, and those who succeed gain wealth and reputation for themselves and the commercial establishments with which they are connected. Although they initiate they by no means have the power to do this arbitrarily, but have to adapt themselves to vague but potent tendencies in the mind of their public. It is their business to divine these and to produce something which will fit the psychological situation. At the seasons when new styles are looked for the rival artists are ready with their designs, which they try upon the public by causing professional models, actresses, or other notabilities to appear in them. Of the many so presented only a few come into vogue, and no designer can be certain of success: no one can surely foresee what will work and what will not. But the designs that win in Paris spread almost without opposition over the rest of the fashionable earth. In the sphere of ideas “working” is to be understood as the enhanced thought which the introduction of an idea into the mental situation may stimulate. An idea that makes us think, especially if we think fruitfully, is a working idea. In order to do this it must be different from the ideas we have, and yet cognate enough to suggest and stimulate a synthesis. When this is the case the human mind, individual or collective, is impelled to exert itself in order to clear the matter up and find an open way of thinking and acting. Thus it strives on to a fresh synthesis, which is a step in the mental growth of mankind.