Through sex, mankind may attain the great spiritual illumination which will transform the world, which will light up the only path to earthly paradise.

Like begets like. We gather perfect fruit from perfect trees... . Abused soil brings forth stunted growths.

Eugenics is ... the most adequate and thorough avenue to the solution of racial, political and social problems.

No despot ever flung forth his legions to die in foreign conquest, no privilege-ruled nation ever erupted across its borders, to lock in death embrace with another, but behind them loomed the driving power of a population too large for its boundaries and its natural resources.

Birth control is nothing more or less than...weeding out the unfit.

Birth control appeals to the advanced radical because it is calculated to undermine the authority of the Christian churches. I look forward to seeing humanity free someday of the tryanny of Christianity no less than Capitalism.

The first right of every child is to be wanted, to be desired, to be planned for with an intensity of love that gives it its title to being.