From
http://www.funnytimes.com/ 
How do wars start? Diplomats tell lies to journalists and then people believe what they read. - Karl Kraus
War is too important a matter to be left to the military - Georges Clemenceau
To die for an idea is unquestionably noble. But how much nobler it would be if men died for ideas that were true! - HL Mencken
To die for an idea is to put a rather high price on conjecture - Anatole France
I have given two cousins to war and I stand ready to sacrifice my wife's brother - Artemus Ward
Wars teach us not to love our enemies, but to hate our allies - WL George
You cant say that civilization dont advance for in every war, they kill you in a new way - Will Rogers
Military justice is to justice as military music is to music - Groucho Marx
War talk by men who have been in a war is always interesting. Where as moon talk by poets who have never been in the moon is likely to be dull - Mark Twain
America is addicted to wars of distraction - Barbara Ehrenreich
It takes 15 thousand casualties to train a major-general - Ferdinand Foch
"Military intelligence" is a contradiction in terms - Groucho Marx
What war has always been is a puberty ceremony. Its a very rough one, but you went away a boy and came back a man, maybe with an eye missing or whatever, but goddammit you were a man and people had to call you a man thereafter. - Kurt Vonnegut, Jr
The draft is white people sending black people to fight yellow people to protect the country they stole from red people - Jerome Ragni and James Rado, 1967 
War will never cease until babies begin to come into the world with larger cerebrums (read: Brains), and smaller adrenal glands. - HL Mencken
As long as war is wicked, it will always have its fascination. As soon as it is deemed vulgar, it will cease to be popular - Oscar Wilde
There was never a good war or a bad peace - Benjamin Franklin
There are no warlike peoples - only warlike leaders - Ralph Bunche
A great many people enjoy a war provided its not in their neighborhood and not too bad - Bertrand Russell
Men should stop fighting among themselves, and start fighting insects - Luther Burbank