"Today's spiritual agitation and the changing conditions of life are part of a broader and deeper revolution. As a result of the latter, intellectual formation is ever increasingly based on the mathematical and natural sciences and on those dealing with man himself, while in the practical order the technology which stems from these sciences takes on mounting importance. This scientific spirit has a new kind of impact on the cultural sphere and on modes of thought. Technology is now transforming the face of the earth, and is already trying to master outer space. To a certain extent, the human intellect is also broadening its dominion over time: over the past by means of historical knowledge; over the future, by the art of projecting and by planning. Advances in biology, psychology, and the social sciences not only bring men hope of improved self-knowledge; in conjunction with technical methods, they are helping men exert direct influence on the life of social groups. At the same time, the human race is giving steadily-increasing thought to forecasting and regulating its own population growth. History itself speeds along on so rapid a course that an individual person can scarcely keep abreast of it. The destiny of the human community has become all of a piece, where once the various groups of men had a kind of private history of their own. Thus, the human race has passed from a rather static concept of reality to a more dynamic, evolutionary one. In consequence there has arisen a new series of problems, a series as numerous as can be, calling for efforts of analysis and synthesis."