America always put forth this phony melting pot theory, but it's a reality now. They couldn't accomplish the melting pot economically; they couldn't accomplish it politically, or through education and science. But America has become a consumer society, and I see young people in the cities - of all colors and races - hanging out together over consumerism.
In every animal which has not passed the limit of its development, a more frequent and continuous use of any organ gradually strengthens, develops and enlarges that organ, and gives it a power proportional to the length of time it has been so used; while the permanent disuse of any organ imperceptibly weakens and deteriorates it, and progressively diminishes its functional capacity, until it finally disappears.