Economics is in high degree a pedagogical discipline, and an economist must be in close touch with popular psychology in order to know what ought to be said at any particular moment.

Quoted in Bertil Ohlin (1972, 107); as cited in: Carlson, Benny, and Lars Jonung. "Knut Wicksell, Gustav Cassel, Eli Heckscher, Bertil Ohlin and Gunnar Myrdal on the role of the economist in public debate." Econ Journal Watch 3.3 (2006): p. 525