In his notable book _L’Irreligion de l’Avenir_, the importance of which we shall note more fully when we deal with the religious problem in our last chapter, Guyau indicates the possibilities of general intellectual progress in the future. The demand of life itself for fuller expression will involve the decay of cramping superstitions and ecclesiastical dogmas. The aesthetic elements will be given a larger place, and there will be intellectual freedom. Keen as Guyau is upon maintaining the sociological standpoint, he sees the central factor in progress to be the mental. “Progress,” he remarks,[20] “is not simply a sensible amelioration of life—it is also the achievement of a better intellectual formulation of life, it is a triumph of logic. To progress is to attain to a more complete consciousness of one’s self and of the world, and by that very fact to a more complete inner consistency of one’s theory of the world.” Guyau follows his stepfather in his view of “sociability” or _fraternité_ (to use the watchword of the Revolution) as the desirable end at which we should progressively aim—a conclusion which is but the social application of his central concept of Life. [20] Introduction to _L’Irreligion de l’Avenir_. The next step in human progress must be in the direction of human solidarity. Guyau thinks it will arise from collective, co-operative energy (_synergie sociale_). Further progress must involve simultaneously _sympathie sociale_, a community of fellowship or comradeship, promoted by education of a true kind, not mere instruction, but a proper development and valuation of the feelings. Here art will play its part and have its place beside science, ethics and philosophy in furthering the ideal harmony in human society. Such Progress involves, therefore, that the Beautiful must be sought and appreciated no less than the True and the Good, for it is a revelation of the larger Life of which we ourselves are part. These ideals are in themselves but manifestations of the Supreme Vitality.