I think the greatest sin in the world is bringing children into the world that have disease from their parents, that have no chance to be a human being, practically. Delinquents, prisoners, all sorts of things just marked when they're born. That to me is the greatest sin - that people can - can commit.

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

Woman must have her freedom, the fundamental freedom of choosing whether or not she will be a mother and how many children she will have. Regardless of what man's attitude may be, that problem is hers - and before it can be his, it is hers alone.

More children from the fit, less from the unfit -- that is the chief aim of birth control.

We are paying for and even submitting to the dictates of an ever increasing, unceasingly spawning class of human beings who never should have been born at all-that the wealth of individuals and of state is being diverted from the development and the progress of human expression and civilization.

Women of the working class, especially wage workers, should not have more than two children at most. The average working man can support no more and and the average working woman can take care of no more in decent fashion.

There is only one reply to a request for a higher birthrate among the intelligent, and that is to ask the government to first take the burden of the insane and feeble-minded from your back. [Mandatory] sterilization for these is the answer.