"As a man with a great many ideas who knew very little economics. He knew nothing but Marshallian economics; he was completely unaware of what was going on elsewhere; he even knew very little about nineteenth-century economic history. His interests were very largely guided by esthetic appeal. And he hated the nineteenth century, and therefore knew very little about it — even about the scientific literature. But he was a really great expert on the Elizabethan age."
January 1, 1970
https://en.wikiquote.org/wiki/John_Maynard_Keynes_and_Friedrich_Hayek