"Only the mediocre die always at their best. Real leaders are always improving - and raising their bar on how superbly they can perform and how quickly they can move."

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Those people who are always improving never become great. Greatness is an eminence, the ascent to which is steep and lofty, and which a man must seize on at once by natural boldness and vigor, and not by patient, wary steps.

— William Hazlitt