A long harangue about the sterilization of the unfit, to which (it appeared) a campaign to encourage the marriage of the fit was a necessary corollary.

From Gaudy Night by Dorothy L. Sayers.  Miss Schuster-Slatt is an American character who appears on occasion.  

But to Harriet’s intense horror, the question and reply seemed to have opened up an avenue for a dark, determined woman with large spectacles and rigidly groomed hair, who sat opposite to her, and who now bent over and said, in piercingly American accents: “I don’t suppose you remember me, Miss Vane? I was only in college for one term, but I would know you anywhere. I’m always recommending your books to my friends in America who are keen to study the British detective story, because I think they are just terribly good.”

      “Very kind of you,” said Harriet, feebly.

      “And we have a very dear mutooal acquaintance,” went on the spectacled lady.

      Heavens! thought Harriet. What social nuisance is going to be dragged out of obscurity now? And who is this frightful female?

      “Really?” she said, aloud, trying to gain time while she ransacked her memory. “Who’s that. Miss-”

      “Schuster-Slatt” prompted Phoebe’s voice in her ear.

      “Schuster-Slatt.” (Of course. Arrived in Harriet’s first summer term. Supposed to read Law. Left after one term because the conditions at Shrewsbury were too restrictive of liberty. Joined the Home Students, and passed mercifully out of one’s life.)

[snip]

“Well, there,” said Miss Schuster-Slatt, “I’m afraid I’ve been very, very tactless. My mother always said to me, ‘Sadie, you’re the most tactless girl I ever had the bad luck to meet.’ But I am enthusiastic. I get carried away. I don’t stop to think. I’m just the same with my work. I don’t consider my own feelings; I don’t consider other people’s feelings. I just wade right in and ask for what I want, and I mostly get it.”

      

After which, Miss Schuster-Slatt, with more sensitive feeling than one might have credited her with, carried the conversation triumphantly away to the subject of her own work, which turned out to have something to do with the sterilization of the unfit, and the encouragement of matrimony among the intelligentsia.

[snip]

. . . and when Miss Mollison was driven away by Miss Schuster-Slatt, the irritation was little relieved, for Harriet was subjected to a long harangue about the sterilization of the unfit, to which (it appeared) a campaign to encourage the marriage of the fit was a necessary corollary. Harriet agreed that intellectual women should marry and reproduce their kind; but she pointed out that the English husband had something to say in the matter and that, very often, he did not care for an intellectual wife.

 

[snip]

The prospect seemed discouraging for Miss Schuster-Slatt’s matrimonial campaign, since the rule seemed to be that a great woman must either die unwed, to Miss Schuster-Slatt’s distress, or find a still greater man to marry her. And that limited the great woman’s choice considerably, since, though the world of course abounded in great men, it contained a very much larger number of middling and common-place men. The great man, on the other hand, could marry where he liked, not being restricted to great women; indeed, it was often found sweet and commendable in him to choose a woman of no sort of greatness at all.

[snip]

Ineluctably the American contingent advanced upon them. They were alongside. Miss Schuster-Slatt was crying out excitedly. It was Harriet’s turn to blush for her friends. With incredible coyness Miss Schuster-Slatt apologized for her intrusion, effected introductions, was sure they were terribly in the way, reminded Lord Peter of their former encounter, recognized that he was far too pleasantly occupied to wish to be bothered with her, poured out a flood of alarming enthusiasm about the Propagation of the Fit, again drew strident attention to her own tactlessness, informed Lord Peter that Harriet was a lovely person and just too sympathetic, and favoured each of them with an advance copy of her new questionnaire. 

[snip]

“Of course I admit,” said Miss Barton, rather angrily, “that murder must be prevented and murderers kept from doing further harm. But they ought not to be punished and they certainly ought not to be killed.”

     

“I suppose they ought to be kept in hospitals at vast expense, along with other unfit specimens,” said Miss Edwards. “Speaking as a biologist, I must say I think public money might be better employed. What with the number of imbeciles and physical wrecks we allow to go about and propagate their species, we shall end by devitalizing whole nations.”

“Miss Schuster-Slatt would advocate sterilization,” said the Dean.

“They’re trying it in Germany, I believe,” said Miss Edwards.

     

“Together”, said Miss Hillyard, “with the relegation of woman to her proper place in the home.”

This reflects the intellectual ecosystem out of which emerged Planned Parenthood and numerous other policies, especially in Europe which appall us today.  So discordant to hear eugenics being bandied about as a rational and progressive policy.