13/31 In short, it formulates tendencies, and these are its only laws. Some tendencies, of course, appear to be more enduring than others, and thus may be thought to approximate more closely to laws of the timeless kind. But _x_, the unknown quantity, the something or other that is not physical, runs through them all, however much or little they may seem to endure. For science, at any rate, which departmentalizes the world, and studies it bit by bit, there is no getting over the fact that living beings in general, and human beings in particular, are subject to an evolution which is simple matter of history. For that reason I am not going to describe biology as natural history, or anthropology as the natural history of man. |