Address at the Sorbonne, Paris, 23 Apr. 1910. Richard M. Nixon quoted this passage in his address to the nation announcing his decision to resign the presidency, 8 Aug. 1974. See Theodore Roosevelt 1; Theodore Roosevelt 2; Theodore Roosevelt 5
John Milton (1785). “Paradise Regain'd: A Poem, in Four Books. To which is Added Samson Agonistes: and Poems Upon Several Occasions. The Author John Milton. A New Edition. With Notes of Various Authors, by Thomas Newton, ...”, p.92
Adam Smith (1817). “The Theory of Moral Sentiments: Or, An Essay Towards an Analysis of the Principles by which Men Naturally Judge Concerning the Conduct and Character, First of Their Neighbours, and Afterwards of Themselves : to which is Added, A Dissertation on the Origin of Languages”, p.550
Alexander Hamilton (1850). “The Works of Alexander Hamilton: Correspondence [contin.] 1795-1804; 1777; 1791. Letters of H. G. 1789. Address to public creditors. 1790. Vindication of funding system. 1791”, p.423