“I believe that the rendering of useful service is the common duty of mankind and that only in the purifying fire of sacrifice is the dross of selfishness consumed and the greatness of the human soul set free.”
I Believe
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John D. Rockefeller, Jr. 15
American financier and philanthropist 1874–1960Related quotes

The Revolutionary Path, by Frank Buchman, publisher: Grosvenor Books, 1975, p.23
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4
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Preface; lead paragraph
A Mathematical Dictionary: Or; A Compendious Explication of All Mathematical Terms, 1702