The goal of eugenics was to create a superior human being, and with this creation, to in time create a superior human race. The First International Congress for Eugenics was held in 1912 in London. Rather than being a fringe movement, it was hailed by a number of luminaries of the day. For example, Charles Darwin's son presided, while Winston Churchill led the British delegation. Among the Americans present were the presidents of Harvard and Stanford universities and Alexander Graham Bell. The Germans present advocated "racial hygiene," which later became Nazi policy. According to historian Stefan Kuhl, German eugenecists enjoyed a special relationship with their counterparts from the United States ("Nazi Eugenic"). The beliefs of these groups contain elements that are still being brought up in discussions of cloning humans. They included trust that selective breeding and choice of genetic traits is an effective means of improving the overall quality of the human species, the conviction that heredity directly determines physical, physiological, personality, and mental traits in adults, and a belief in the inherent inferiority of some races and social classes and superiority of others (Allen). In the early Thirties, it was believed that the race, indeed the world, needed to be purified of those elements of humanity that would bring the breeding pool down. To that end, the crippled, the mentally deficient, sufferers of hereditary diseases, and those thought to be racially inferior were to be stopped from breeding. Forced sterilization was one means of accomplishing this goal. Euthanasia, the killing of people for the greater good, was also a means of purging the world of inferior people. Germany adopted a sterilization law in 1933, which made people with such hereditary disabilities as Huntington's Corea, feeble-mindedness, blindness and deafness, grave bodily deformity, and hereditary alcoholism subject to forced sterilization for the good of the people (Lifton 301).