"Since about 1900 the better stocks have not been replacing their numbers, while the stupider and less healthy have been more than replacing theirs. Unless there is a change in the public mind every rank above the lowest must degenerate, and, as inferior men push up into its gaps, degenerate more and more quickly. The results are already visible in the degeneration of literature, newspapers, amusements (there was once a stock company playing Shakespeare in every considerable town), and, I am convinced, in benefactions like that of Lord Nuffield, a self-made man, to Oxford, which must gradually substitute applied science for ancient wisdom."
January 1, 1970
https://en.wikiquote.org/wiki/Eugenics