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The Dao lies in being invisible, and its application lies in being unfathomable. Remain empty, tranquil and inactive, and observe subordinates faults in secret. See as if unseen, hear as if unheard, know as if unknown.
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The Dao is the origin of all things in the world and the standard for judging right and wrong. Therefore, an enlightened ruler grasps this origin to explore the beginning and end of all things, and studies this standard to analyze the causes of success and failure.