In passing, we should here recognize the difficulties presented by the idea of 'fit' and 'unfit.' Who is to decide this question? The grosser, the more obvious, the undeniably feeble-minded should, indeed, not only be discouraged but prevented from propagating their kind. But among the writings of the representative Eugenists one cannot ignore the distinct middle-class bias that prevails.

Chapter 8, "Dangers of Cradle Competition" (also quoted in Charles Valenza, "Was Margaret Sanger a Racist?" Family Planning Perspectives, January-February 1985, page 44.) - The Pivot of Civilization, 1922