Stick by your guns, but don't fire.

I am become death-the shatterer of worlds.

The way to win an atomic war is to make certain it never starts.

I am proud of the fact that I never invented weapons to kill.

Arms are instruments of ill omen, not the instruments of the gentleman. When one is compelled to use them, it is best to do so without relish.

There will one day spring from the brain of science a machine or force so fearful in its potentialities, so absolutely terrifying, that even man, the fighter ... will be appalled, and so abandon war forever. What man's mind can create, man's character can control.

Every gun that is made, every warship launched, every rocket fired signifies, in the final sense, a theft from those who hunger and are not fed, those who are cold and are not clothed. This world in arms is not spending money alone. It is spending the sweat of its laborers, the genius of its scientists, the hopes of its children.

We have perfected our weapons but failed to perfect the men who use them.

Covenants without swords are but words.

... savage bears agree among themselves, but man without remorse beats out the deadly sword on the accursed anvil.