For once, we can all agree with him.

Via The Hill:

Sen. John McCain (R-Ariz.) on Wednesday talked about his biggest regrets in life during an event with students at Harvard University.

A student who said he admires McCain asked the senator to identify his biggest regret in life.

“As far as one huge mistake … maybe running for president,” McCain said at one point during his answer at Harvard University’s John F. Kennedy Jr. forum.

McCain, 77, lost to President Obama in 2008, receiving only 173 electoral votes to Obama’s 365. He also ran for president in 2000, but President George W. Bush won the nomination.