Vice President Biden spoke to graduating Yale students Sunday, sporting his signature aviators. He spoke about lessons he learned in his lengthy political career that could apply elsewhere, including being No. 2 to the POTUS and his notorious big mouth, which sometimes gets him into trouble.

Here are four big political takeaways from Biden's speech:

Why caricatures of people in politics aren't helpful

He told listeners to "try to look beyond the caricature of the person with whom you have to work. ... It gets in the way of being able to reach consensus for things that matter to you and many other people."

Why it's OK to questions someone's judgement, but not motives

Biden said when he first entered the U.S. Senate, he criticized then-Sen. Jesse Helms (R-N.C.) for his stance on a bill related to disability but later found out Helms had adopted a disabled child. "When you question a man's motives, when you say they're acting out of greed or in the pocket of an interest group, it's awful hard to reach consensus," he said.

On speaking his mind

"I realize no one ever doubts I mean what I say. The problem occasionally is I say all that I mean. I have a bad reputation for being straight, sometimes at inappropriate times."

How Yale being beat by Harvard is like him being vice president instead of president

"Look, you know it's tough to end a great man's basketball and football season one touchdown away from beating Harvard this year for the first time since 2006," Biden said, pointing to painfully close losses in football and basketball to the rival Crimson in recent months. "So close to something you wanted for eight years. I can only imagine how you feel. I can only imagine. So close. So close."