The next World War will be fought with stones.

He who joyfully marches to music in rank and file has already earned my contempt. He has been given a large brain by mistake, since for him the spinal cord would suffice.

I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones.

This topic brings me to that worst outcrop of herd life, the military system, which I abhor... This plague-spot of civilization ought to be abolished with all possible speed. Heroism on command, senseless violence, and all the loathsome nonsense that goes by the name of patriotism -- how passionately I hate them!

It is my conviction that killing under the cloak of war is nothing but an act of murder.

One cannot simultaneously prevent and prepare for war