No U.S. soldier ever dies in vain because they're carrying out the missions of their commander in chief. And we honor all the service that they've provided. Our troops have performed brilliantly. The question is for the next president, are we making good judgments about how to keep America safe precisely because sending our military into battle is such an enormous step.

Now, I swore an oath to uphold the laws on the books... Now, I know some people want me to bypass Congress and change the laws on my own... Believe me, the idea of doing things on my own is very tempting. I promise you. Not just on immigration reform. But that's not how - that's not how our system works. That's not how our democracy functions. Thats not how our Constitution is written.

Angela Merkel has been an extraordinary partner for me and for the United States throughout my presidency.

What makes us exceptional - what makes us American - is our allegiance to an idea articulated in a declaration made more than two centuries ago: “We hold these truths to be self-evident, that all men are created equal; that they are endowed by their Creator with certain unalienable rights; that among these are life, liberty, and the pursuit of happiness.”

There are problems that just end up being really hard and by definition the only problems that come to my desk are the ones that nobody else can solve.

If we have Osama bin Laden in our sights and the Pakistani government is unable or unwilling to take them out, then, I think that we have to act and we will take them out. We will kill bin Laden. We will crush al Qaeda. That has to be our biggest national security priority.

Focusing your life solely on making a buck shows a poverty of ambition. It asks too little of yourself. And it will leave you unfulfilled.