"The third group [of society] are those irresponsible and reckless ones having little regard for the consequences of their acts, or whose religious scruples prevent their exercising control over their numbers. Many of this group are diseased, feeble-minded, and are of the pauper element dependent upon the normal and fit members of society for their support. There is no doubt in the minds of all thinking people that the procreation of this group should be stopped."
Margaret Sanger. Speech quoted in Birth Control: What It Is, How It Works, What It Will Do. The Proceedings of the First American Birth Control Conference. Held at the Hotel Plaza, New York City, November 11-12, 1921. Published by the Birth Control Review, Gothic Press, pages 172 and 174.