Mankind must put an end to war before war puts an end to mankind.
John F. Kennedy

The supreme art of war is to subdue the enemy without fighting.
Sun Tzu

I am not afraid of an army of lions led by a sheep; I am afraid of an army of sheep led by a lion.
Alexander the Great

Never think that war, no matter how necessary, nor how justified, is not a crime.
Ernest Hemingway

The most shocking fact about war is that its victims and its instruments are individual human beings, and that these individual beings are condemned by the monstrous conventions of politics to murder or be murdered in quarrels not their own.
Aldous Huxley

Can anything be stupider than that a man has the right to kill me because he lives on the other side of a river and his ruler has a quarrel with mine, though I have not quarrelled with him?
Blaise Pascal

You can't say civilization don't advance... in every war they kill you in a new way.
Will Rogers

Only the dead have seen the end of the war.
George Santayana

In peace, sons bury their fathers. In war, fathers bury their sons.
Herodotus

Conquered, we conquer.
Plautus

I will not play tug o' war. I'd rather play hug o' war. Where everyone hugs instead of tugs, Where everyone giggles and rolls on the rug, Where everyone kisses, and everyone grins, and everyone cuddles, and everyone wins.
Shel Silverstein