Send a Quote Enter a brief message. SendOk2 “The unbalance between the birth rate of the 'unfit' and the 'fit,' [is] the greatest present menace to civilization… the most urgent problem today is how to limit and discourage the over-fertility of the mentally and physically defective.” ~ Margaret Sanger (1879-1966) American birth control activist, sex educator, nurse, founded the American Birth Control League, which later became the Planned Parenthood Federation of America