The Occupistas and mainstream economics

A number of students walked out of their introductory economics class (Economics 10) at Harvard because "the biased nature of Economics 10 contributes to and symbolizes the increasing economic inequality in America.”  Their professor, Greg Mankiw has written a response.  It's an interesting read, but one sentence struck me as pretty funny:

A prerequisite for being a good economist is an ample dose of humility.

Mankiw strikes me as having the required dose of humility, which puts him in a distinct minority among economists, particularly macroeconomists.