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Continue to ChatSubtle and insubstantial, the expert leaves no trace; divinely mysterious, he is inaudible. Thus he is master of his enemy's fate. - Sun Tzu from https://whatsmyquote.com/quote/subtle-and-insubstantial-the-expert-leaves-no-trace-divinely-mysterious-he-is-inaudible-thus-he-is-master-of