Always, in the beginning, before his conscious life dawned, he had crawled toward the mouth of the cave. And in this his brothers and sisters were one with him. Never, in that period, did any of them crawl toward the dark corners of the back-wall. The light drew them as if they were plants; the chemistry of the life that composed them demanded the light as a necessity of being; and their little puppet-bodies crawled blindly and chemically, like the tendrils of a vine. Later on, when each developed individuality and became personally conscious of impulsions and desires, the attraction of the light increased. They were always crawling and sprawling toward it, and being driven back from it by their mother.