The man who has done his best has done everything. The man who has done less than his best has done ...

The man who has done his best has done everything. The man who has done less than his best has done nothing.

Charles M. Schwab

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Source needed: There's evidence to suggest that this quote is attributed to the author, though no official sources or credible evidence could be found or has yet to be added to this page
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United States capitalist and public official

February 18th, 1862 - October 18th, 1939