"We are faced with the paradoxical fact that education has become one of the chief obstacles to intelligence and freedom of thought."

"There are three ways of securing a society that shall be stable as regards population. The first is that of birth control, the second that of infanticide or really destructive wars, and the third that…"

"The only way to be happy is to take pleasure in everything you do."

"It is possible that mankind is on the threshold of a golden age; but, if so, it will be necessary to kill off nine-tenths of the present population."

"We owe to Christianity a certain respect for the individual...."