Man did not make this mistake. Isolated tribes and even races might settle down in contentment, become completely adapted to easy conditions of life, and stagnate or degenerate. But a saving remnant was always marching out into new physical or social surroundings, exposed to new needs, fears, and opportunities, and readapting itself to meet and profit by them. Man was not, and could not be, precocious. He was always a bundle of possibilities and great expectations, which he has even now only begun to realize. Overpopulation, or other pressure in his primeval home, resulted in great racial migrations, sending him all over the world to seek his fortune. He became one of the very few physically cosmopolitan animals, living everywhere from the equator to the Arctic zone. He became toughened and hardened and adaptable, able to live under the most trying circumstances. Everywhere he had to be a close observer, watchful and wary. He was weak and defenseless, and his life depended upon his quick recognition of "nature's signs of displeasure," upon the full exercise of his few small wits. He learned to be faithful in a few things. We need not repeat or review this weary chapter of his history. "There were years that no one talked of. There were times of horrid doubt. There was faith and hope and whacking and despair." Man was experimenting with all kinds of climates and conditions. It was in the hard and cold northern regions that he developed farthest, though less rapidly at first. We have already glanced at the educational results of language, of family life in the rock-shelter around the fire, of the fashioning and use of tools, of his love of ornaments and display, of his dawning and clearing self-consciousness, of the beginnings of ownership. We have noticed his burial rites and their suggestions. All these may have been rude and crude, but they contained the germs of vast possibilities, though painfully slow of development. His "castles in Spain" were his richest possessions, though he probably never knew or suspected them. One hundred thousand years of human life in Europe produced nothing higher than Neanderthal man.