“Thee might observe incidentally that if the state paid for child-bearing it might and ought to require a medical certificate that the parents were such as to give a reasonable result of a healthy child – this would afford a very good inducement to some sort of care for the race, and gradually as public opinion became educated by the law, it might react on the law and make that more stringent, until one got to some state of things in which there would be a little genuine care for the race, instead of the present haphazard higgledy-piggledy ways.”

Letter to Alys Pearsall Smith (1894); published in The Selected Letters of Bertrand Russell, Volume 1: The Private Years (1884–1914), edited by Nicholas Griffin. It should be noted that in his talk of "the race", he is referring to "the human race". Smith married Russell in December 1894; they divorced in 1921.
1890s