On Tuesday, December 18, at the Washington Post, Rajiv Chandrasekaran revealed that, while he was top U.S. commander in Afghanistan, Gen. David Petraeus relied on the advisory services of prominent conservative think-tankers and military historians Frederick and Kimberly Kagan. He seems to have allowed them near-total access.

Provided desks, e-mail accounts and top-level security clearances in Kabul, they pored through classified intelligence reports, participated in senior-level strategy sessions and probed the assessments of field officers in order to advise Petraeus about how to fight the war differently.

But

The Kagans’ proximity to Petraeus, the country’s most-famous living general, provided an incentive for defense contractors to contribute to Kim Kagan’s think tank.

The Kagans had hoped to head off appearances of conflict of interest by working for free.

“There are actual patriots in the world,” Fred Kagan said. “It was very important to me not to be seen to be profiting from the war.”

Ah, the humility. Wait — I’ve got an idea. It was just revealed that conservative New York Times columnist David Brooks is teaching a course during the spring semester at Yale titled “Humility.” Apparently, he’s spoken and written about the subject before.

Brooks told New York magazine via email: “The title of the Humility course is, obviously, intentionally designed to provoke smart ass jibes, but there’s actually a serious point behind it.” From the course description: “The premise that human beings are blessed with many talents but are also burdened by sinfulness, ignorance, and weakness.”

Then why not invite Fred Kagan to sit in and learn a thing or two about humility? Then, should Brooks choose to follow up his spring course with one on the fall titled “Hubris,” he could invite Gen. Petraeus himself as a guest lecturer.