"Tawney the politician barred the way to Tawney the scholar. Time which he might given to studying history was devoted instead to the Fabian Society and the Labour Party, and he tended to see the world past and present in terms of socialist dogma. Hence his wholly untrue picture of early capitalism as cruel and greedy, destructive alike of social welfare and true spiritual values. No one would wish to deny that Tawney was a great man, but this greatness caused him to lead whole generations of history students into grievous error."
January 1, 1970
https://en.wikiquote.org/wiki/R._H._Tawney