Humanity is still in its childhood; we have “bound” so little time in the course of the centuries, which are so brief in the scheme of the universe. At the bottom of every human activity, historical fact or trend of civilization, there lies some doctrine or conception of so-called “truth.” Apples had fallen from trees for ages, but without any important results in the economy of humanity. The fact that a fallen apple hit Newton, led to the discovery of the theory of gravitation; this changed our whole world conception, our sciences and our activities; it powerfully stimulated the development of all the branches of natural and technological knowledge. Even in the event of the Newtonian laws being proved to be not quite correct, they have served a great purpose in enabling us to understand natural phenomena in a sufficiently approximate way to make it possible to build up modern technology and to develop our physical science to the point where it was necessary and possible to make a correction of the Newtonian laws. A similar organic change in our conception of human life and its phenomena is involved in the foregoing definitions of the classes of life; they will replace basic errors with scientific truths of fundamental importance; they will form the basis for scientific development of a permanent civilization in place of the periodically convulsive so-called civilizations of the past and present. To know the cause of evil and error is to find the cure. Chapter IV. What Is Man?