I began feeling the way I imagine an actor or athlete must feel when, after years of commitment to a particular dream...he realizes that he's gone just about as far as talent or fortune will take him. The dream will not happen, and he now faces the choice of accepting this fact like a grownup and moving on to more sensible pursuits, or refusing the truth and ending up bitter, quarrelsome, and slightly pathetic.

Prosperity without freedom is just another form of poverty.

We have not confronted forcefully enough the intolerance, sectarianism, and hopelessness that feeds violent extremism in too many parts of the globe.

Now let's make two things clear: ISIL is not 'Islamic.' No religion condones the killing of innocents, and the vast majority of ISIL's victims have been Muslim. And ISIL is certainly not a state. It was formerly al Qaeda's affiliate in Iraq, and has taken advantage of sectarian strife and Syria's civil war to gain territory on both sides of the Iraq-Syrian border. It is recognized by no government, nor the people it subjugates. ISIL is a terrorist organization, pure and simple. And it has no vision other than the slaughter of all who stand in its way.

It's important to know that the vast majority of people who were excited in 2008 are still really enthusiastic. We've got more volunteers now than ever, and they're engaged, they're motivated, they're not paying attention to the ups and downs of polls or Washington.

You are part of the first generation of officers to begin your service in a world where the effects of climate change are so clearly upon us. Climate change will shape how every one of our services plan, operate, train, equip, and protect their infrastructure, today and for the long-term.

For me, personally, the most difficult moments had to do with not just terrorist attacks, but also shootings.