Climate change constitutes a serious threat to global security.

Nobody's changing what you've got. You get to keep it.

On this day, we gather because we have chosen hope over fear, unity of purpose over conflict and discord.

I know CNN has taken some knocks lately but the fact is, I admire their commitment to covering all sides of the story, just in case one of them happens to be accurate.

I don't buy the hype when everybody is saying how wonderful things are and how great I am, and I don't get too down when people say, "This is a disaster and he's done for."

America is a country of strong families and strong values. My life's been blessed by both.

I look forward to teaching the occasional class, 'cause I was a professor. And I had fun doing it.