Wagner began with the claim that classical political economy was a discipline in crisis. The root of the problem was one that earlier German historical economists had identified, the reliance on the postulate that all human behavior is based on narrowly conceived self-interest. By taking this unidimensional view, the classicals had ignored the many factors motivating human behavior, in particular the ethical dimension.
— Bruce Caldwell, Hayek’s Challenge: An Intellectual Biography of F.A. Hayek (Chicago: Chicago University Press, 2004), p. 55.
Some criticisms have been around for a while.