Paul Valéry's quote about War

Paul Valéry's quote about W :

“War: a massacre of people who don't know each other for the profit of people who know each other but don't massacre each other”

— Paul Valéry

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Know Source and Context of this Quote :

Paul Valéry's full name was Ambroise 'Paul Toussaint Jules Valéry'. He was a French poet, essayist, and philosopher. In addition to poetry and fiction (plays and dialogues), his interests included short but significant commentaries on art, history, letters, music, and current events. Paul Valéry was nominated for the Nobel Prize in Literature 12 times of different years.