Scientists, for example, sometimes claim domains which are not theirs by _spelling abstract nouns with capitals, by positing Law or Evolution as the makers and builders of the world_. But law never did anything; law is only man's statement of the way, according to his observation, in which things are done. To explain the universe as the creation of Law is on a par with explaining homes as the creation of Matrimony. Abstract nouns do not create anything and the capitalizing of a process never can explain it. So, too, Evolution does nothing to the world; it is the way in which whoever makes the world is making it. As well explain the difference between an acorn and an oak by saying that Growth did it, as to explain the progress of creation from stardust to civilization by changing e to E. Science may describe the process as evolutionary, but its source, its moving power, and its destiny are utterly beyond her ken. For another thing, scientists often invade realms which are not theirs, _by stretching the working theories of some special science to the proportions of a complete philosophy of life_. A generation ago, when geology and biology were in their "green and salad days," the enthusiasm inspired by the splendid results of their hypotheses went to strange lengths. One professor of geology seriously explained the pyramids of Egypt to be the remains of volcanic eruption which had forced its way upwards by slow and stately motion. The hieroglyphs were crystalline formations and the shaft of the great pyramid was the airhole of a volcano. Scientists are human like all men; their specialties loom large; the ideas that work in their limited areas seem omnipotent. So a student of the influence of sunlight on life thinks reactions to the sun explain everything. "Heliotropism," he says, "doubtless wrote Hamlet." A specialist on the influence of geography on human nature interprets everything as the reaction of man to seas, mountains, plains, and deserts, and Lombroso even thinks the revolutionary temperament especially native to men who live on limestone formations! Specialists in economic history are sure that man is little more than an animated nucleus of hunger and that all life is explicable as a search for food. And psychologists, charmed by the neatness of description which causal connections introduce into our inner life, leap to the conclusion, which lies outside their realm, that personality is an illusion, freedom a myth and our mental life the rattling of a causal chain forged and set in motion when the universe began. _All this is not science; it is making hypotheses from a limited field of facts masquerade as a total philosophy of life._