"As I look back through history I find a parallel. I ask you to recall the uproar that followed Charles Darwin's announcement of his theories of evolution. The concept of man's origin from pre-existing forms was hotly and emotionally denied, and the denials came not only from the lay public but from Darwin's peers in science. Only after many years did the concepts set forth in The Origin of Species become firmly established. Today, it would be hard to find any person of education who would deny the facts of evolution. Yet so many of us deny the obvious corollary: that man is affected by the same environmental influences that control the lives of all the many thousands of other species to which he is related by evolutionary ties."