… is from page 31 of the 1990 Transaction Publishers reprint of W.H. Hutt‘s 1936 book, Economists and the Public:
Our most prominent ‘rationalists’ are commonly ignorant and irrational in respect of economic science.
And see Sheldon Richman’s 2012 essay on Hayek’s brilliant December 1945 lecture “Individualism: True and False” (accessible here).