Growth of civilization

One of the things that was implicitly or explicitly recognized during the past many years is that the human mind works in different ways, and that it is capable of creating a comprehensive culture by responding to the action of the environment automatically, instead of gradually in slow, arduous steps from one stage to another. It has often been said that the great civilizations... An independent product of isolated development, you see us talking, for example, about the civilization of Mex...