“To the extent that people develop personal and esthetic interests, they are immune to trivial changes in style and they disdain to foster such low demands. Moreover, as Mr. J. A. Hobson has wisely pointed out, "if an undue amount of individuality be devoted to the production and consumption of food, clothing, etc., and the conscious, refined cultivation of these tastes, higher forms of individual expression in work and life will be neglected."”