You will never have a greater or lesser dominion than that over yourself...the height of a man's success is gauged by his self-mastery; the depth of … - Leonardo da Vinci

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You will never have a greater or lesser dominion than that over yourself...the height of a man's success is gauged by his self-mastery; the depth of his failure by his self-abandonment. ...And this law is the expression of eternal justice. He who cannot establish dominion over himself will have no dominion over others.