Thought was able to follow this course with the greater confidence because it went hand in hand with a change in practical life. By reason of the development of modern life, man's relations to the environment have become increasingly significant to man. Modern industry and physical science have led him from a preponderatingly contemplative relation to his environment to an active one; infinite prospects have been disclosed; the forces of nature have been pressed more and more into the service of mankind. But even in the service which they render man these forces have won a power over him, since with a determining power they keep his activity and his thought bent upon themselves. The material side of life has escaped from the mean estimation in which it had previously been held, if not in the conduct of individuals, yet at the height of spiritual culture: to the present age it has become the indispensable basis of all development. The social movement, with its summoning of the masses to complete participation in happiness and culture, supports the tendency to estimate material goods more highly. With the cessation of oppression and necessity, and with the increase of material well-being, a general advance and an inner development of life seem assured. The whole tendency which we have considered exhibits man as solely and entirely a part of nature, even though nature may be conceived of more broadly than it was formerly; and the life of the society and of the individual as being determined by natural forces and subject to natural laws. How, along with this tendency, the traditional conception of the world has been completely transformed; how biology, in the sense of natural science, has been taken as the leading point of view for the explanation of life, it is unnecessary to follow further, since our consideration of the naturalistic system of life has already given us an insight into this matter. 2. THE GROWTH OF MAN BEYOND NATURE But even after we had seen an older type of life disappear and a new one with the power of youth rise up, gain mastery over souls, and transform conditions, despite all its triumphs the new movement manifested limitations--limitations which did not arouse the criticism of the thinker, but with the compulsion of an actual power the opposition of the developing life of mankind. That which we became aware of in this connection will become even more clear to us, and impel us to seek for new aims, if we now concentrate our attention upon the process of life and follow it throughout its experiences.