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https://scienceandinspiration.com/2019/11/23/he-who-knows-much-about-others-may-be-learnedbut-he-who-understands-himself-is-more-intelligent-he-who-controls-others-may-be-powerfulbut-he-who-has-mastered-himself-is-mightier-still-lao-tsu/
"He who knows much about others may be learned,but he who understands himself is more intelligent. He who controls others may be powerful,but he who has mastered himself is mightier still. - Lao-Tsu Tao The king