"The secret of success is constancy of purpose."
— Success

January 1, 1970

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Added on April 10, 2026
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Original Language: English

Sources

Benjamin Disraeli, speech at banquet of National Union of Conservative and Constitutional Associations, Crystal Palace, London (24 June 1872); Selected Speeches of the Right Honourable the Earl of Beaconsfield, ed. T. E. Kebbel, vol. 2, p. 535 (1882)