"It remains unexplored not merely through snobbery and cowardice, but because the Eugenist (at least the influential Eugenist) half–consciously knows it is no part of his job; what he is really wanted for is to get the grip of the governing classes on to the unmanageable output of poor people. It would not matter in the least if all Lord Cowdray’s descendants grew up too weak to hold a tool or turn a wheel. It would matter very much, especially to Lord Cowdray, if all his employees grew up like that. The oligarch can be unemployable, because he will not be employed. Thus the practical and popular exponent of Eugenics has his face always turned towards the slums, and instinctively thinks in terms of them."
January 1, 1970
https://en.wikiquote.org/wiki/Eugenics_and_Other_Evils