from receiving the question, during a dinner with a middle-aged heterosexual couple that had met with some of the realities of contemporary USA and now unhappily were among the growing number of American nouveau poor, "So you are a Darwinist?"
Charles Darwin: The Descent of Man and Selection in Relation to Sex, published by John Murray, 1871
Dansk utgave utgitt under tittelen Menneskets afstamning og Parringsvalget i 1875.