G. Stanley Hall Quote
War has given applied psychology a tremendous impulse. This will, on the whole, do good, for psychology, which is the largest and last of the sciences, must not try to be too pure.
G. Stanley Hall (1919); Cited in O'Donnell, John M. "The crisis of experimentalism in the 1920s: EG Boring and his uses of history." American Psychologist 34.4 (1979). p. 290