The single biggest existential threat that's out there, I think, is cyber.

I think anybody in our - in the, in the national security apparatus has, has got to take full cognizance of their responsibility for the safeguarding of classified information.

Every Sailor has the potential to lead," said Mullen, "I don't care if it's a seaman recruit or someone higher ranking than myself. Where there's a will, there's a way.

I am convinced that America's great sea of goodwill can be, in fact, a rising tide, a tide that could lift every veteran and every family of our wounded and fallen.

Let us all be men and women in full. Let us expect from ourselves more than we think we can give, more than we think we can do and more than we think we already know.

The mission - the overall mission is to dismantle and defeat and disrupt al-Qaeda. But we have to make sure there's not a safe haven that returns in Afghanistan.

We can't kill our way to victory, and no armed force anywhere - no matter how good - can deliver these keys alone. It requires teamwork and cooperation.

Few things are more damaging to our democracy than a military officer who doesn't have the moral courage to stand up for what's right or the moral fiber to step aside when circumstances dictate.

The truth is, we live in deeds, not days; in actions and thoughts and feelings, not heartbeats.

I worry a little bit about - quote - "regime change." We haven't had a great deal of success with that in years. That's just really difficult.

We have to stop the killing. We need to let the refugees - we need to let Syrian citizens go home.

We're all living in a casino. It's just Vegas. Everything is on camera. Everything is being recorded. Everything is on audio. The truth is we all have access to everybody else's information.

Whatever I thought might hold me back, I avoided. I crossed girls off my list, except as tools for my sexual needs.

We might be known for what we believed, but we're certain to be remembered for what we did about it.

How difficult it is to learn not to see like cameras, which has had such an effect on us. The camera sees everything at once. We don't.

Those trees are your lungs. The earth recycles as your body. The rivers recycle as your circulation. The air is your breath. So what do we call the environment?

Enthusiasm is caught, not taught.

I'm a great believer that, if you know how to operate in Africa, there are unbelievable opportunities.

Everyone has access to a pen and paper, but to be a great writer is difficult.

The key is being with the right people and making the right decisions.

I'm afraid I take ... this rather clinical view of love: it's saving you from madness. I'm not so enthusiastic as other poets have been.