There will be many men who will move one against another, holding in their hands a cutting tool. But these will not do each other any injury beyond t… - Leonardo da Vinci

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There will be many men who will move one against another, holding in their hands a cutting tool. But these will not do each other any injury beyond tiring each other; for, when one pushes forward the other will draw back. But woe to him who comes between them! For he will end by being cut in pieces.