General [James] Mattis's primary experience - indeed, his only experience - is as a member of the United States Marine Corps, where he served for 41 years. That's his experience.

You are part of the world's most feared and trusted force. Engage your brain before you engage your weapon.

Find the enemy that wants to end this experiment (in American democracy) and kill every one of them until they're so sick of the killing that they leave us and our freedoms intact.

PowerPoint makes us stupid.

I don't lose any sleep at night over the potential for failure. I cannot even spell the word.

Demonstrate to the world there is "No Better Friend, No Worse Enemy" than a U.S. Marine.

The most important six inches on the battlefield is between your ears.

If in order to kill the enemy you have to kill an innocent, don't take the shot. Don't create more enemies than you take out by some immoral act.

No war is over until the enemy says it's over. We may think it over, we may declare it over, but in fact, the enemy gets a vote.

There are hunters and there are victims. By your discipline...you will decide if you are a hunter or a victim.

You've been told that you're broken. That you're damaged goods ... there is also Post-Traumatic Growth. You come back from war stronger and more sure of who you are.

How can men boast that they control their own destiny when they cannot solve the problems of war, racism, poverty, sickness, or suffering?

Passion presented with a greater challenge achieves a greater goal.

The Stars are a long way off, and their words get somewhat dulled in the message.

I grew up in a scientific world, the son of a neurosurgeon.

I don't even like firing people. I don't think I've ever said, 'You're fired' to anybody.

Your capacity to receive is based on your hunger to pursue.

I believe that when you find problems, you should also find solutions.

They didn't accept me theory - not a theory, but just a thought I had about this character. I noticed that this man only exists when the boy comes into the grocery.

You know, in the horror movie you kill the monster, and the hand re-emerges. And if you're not looking, the hand grows back and then the monster's there again. That cannot be allowed to happen.

I'm spiritual but I don't practice any sort of thing.