The Obama doctrine of ignoring international issues and claiming it's none of the U.S.' business is a philosophy that has allowed Russia, Iran, and China to step up and take the lead.

Diplomacy and coalition-building are hard work and not easy for any president.

If you don't want war, then you had better be an advocate for diplomacy with muscle.

The Obama Doctrine is the first presidential strategy in history that is exclusively about communicating - not implementing - policy. The Obama Doctrine seems to be 'tweet with overwhelming force.'

The truth of good economic doctoring is to know the general principles, and to really know the specifics. To understand the context, and also, to understand that an economy may need some tender loving care, not just the so-called hard truths, if it's going to get by.

I personally think that people who are inheriting the wealth must have an agreement on how that wealth will flow from generation to generation, how they would like to spend it, and have similar philosophies around philanthropy to ensure continuity and scaling up.

I'll carry a ball around with me all day and ask people to try to knock it out of my hand when I least expect it. I'll give them some money and stuff, so people get pretty geeked up about that. It just helps me to take care of the ball without even thinking about it.

Every time we spend a federal dollar, what we're doing is we're pulling money out of somebody's pocket, and we're giving it to somebody else.