Man is an artifact designed for space travel. He is not designed to remain in his present biologic state any more than a tadpole is designed to remain a tadpole.
Most of the trouble in this world has been caused by folks who can't mind their own business, because they have no business of their own to mind, any more than a smallpox virus has.
The way to kill a man or a nation is to cut off his dreams, the way the whites are taking care of the Indians: killing their dreams, their magic, their familiar spirits.