The other method is that of Carl Ritter, Arnold Guyot, and Cousin. 4 These take account of the freedom of the human will, and the power of man to control and modify the forces of nature. They also take account of the original constitution of man, and the primitive type of nations; and they allow for results arising from the mutual conflict of geographical conditions. And they, especially, recognize the agency of a Divine Providence controlling those forces in nature by which the configuration of the earth's surface is determined, and the distribution of its oceans, continents, and islands is secured; and a providence, also, directing the dispersions and migrations of nations--determining the times of each nation's existence, and fixing the geographical bounds of their habitation, all in view of the moral history and spiritual development of the race,--"that they may feel after, and find the living God." The relation of man and nature is not, in their estimation, a relation of cause and effect. It is a relation of adjustment, of harmony, and of reciprocal action and reaction. "Man is not"--says Cousin--"an effect, and nature the cause, but there is between man and nature a manifest harmony of general laws."... "Man and nature are two great effects which, coming from the same cause, bear the same characteristics; so that the earth, and he who inhabits it, man and nature, are in perfect harmony." 5