Last seen in:
- The Washington Post - Mar 30 2017
- The Washington Post - Jan 26 2017
- The Washington Post - Jan 6 2017
- New York Times - Sep 24 2016
- The Washington Post - Mar 15 2016
- The Chronicle of Higher Education - Feb 12 2016
- New York Times - Oct 5 2014
- Wall Street Journal - Oct 3 2014 - October 3, 2014 - Thinking Out Allowed
- Boston Globe - Feb 19 2012
- Premier Sunday - King Feature Syndicate - Aug 28 2011