War

"He who lives by fighting with an enemy has an interest in the preservation of the enemy's life."
-Friedrich Wilhelm Nietzsche

"Caesar's spirit, ranging for revenge... / Shall in these confines with a monarch's voice / Cry 'havoc!' and let slip the dogs of war..."
-William Shakespeare, Julius Caesar, III:1

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