There are known knowns; there are things we know we know. We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns - the ones we don't know we don't know.

Strive to make proposed solutions as self-executing as possible. As the degree of discretion increases, so too does bureaucracy, delay, and expense.

If there are people who yearn for the days when Saddam Hussein was in power, then I am not among them.

To gain support in U.S. Congress and from other nations requires clarity, an acceptable mission and an explicit outcome.

In the execution of Presidential decisions work to be true to his views, in fact and tone.

It is worth reminding that being president is a tough job for anybody, and particularly so in the information age. There's such a glut of information. Anything a president says or does is picked up on the Internet or the 24/7 news media and criticized almost instantly. Leaders persuade through their words and as such their words need to be measured and well chosen. It is a tough job.

We [the USA] do have a big nation's problem. We have the problem of a nation that's got two oceans, oceans on either side. People come from all across the globe and want to live here and they want to work here and they want to invest here. And that's a good thing. And they make up this country. But as a people, we [americans] are not highly skilled in languages. We're not highly skilled in knowledge of other cultures. And that's a problem.