McCraw quoting the diary of Schumpeter’s former professor, Friedrich von Wieser:
(p. 101) “He is not misled by prevalent sentiment,” the professor wrote in his diary. “Schumpeter has courage, an asset which cannot be over-praised.”
Source:
McCraw, Thomas K. Prophet of Innovation: Joseph Schumpeter and Creative Destruction. Cambridge, Mass.: Belknap Press, 2007.