You have to look at the issue of human evolution from an aeonian and a planetary point of view, embracing the whole civilised history of mankind and not only from the still extremely narrow outlook of science. Man can not forever live happily on skyscrapers, cars, airplanes, ships, television sets, radios, computers, and other productions of technology, nor will he continue for long to feel thrilled with the exiting accounts of astronomers and space explorers, as is the case today.