Friedrich Nietzsche, Maudemarie Clark, Brian Leiter (1997). “Nietzsche: Daybreak: Thoughts on the Prejudices of Morality”, p.171, Cambridge University Press
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
Benjamin Franklin, Peter COLLINSON (1760). “New Experiments and Observations on Electricity. Made at Philadelphia in America. By Benjamin Franklin Esq., and communicated in several letters to Peter Collinson, Esq. Part 1. The third edition”, p.59
Fyodor Dostoevsky (2013). “The Greatest Works of Dostoevsky: Crime and Punishment + The Brother's Karamazov + The Idiot + Notes from Underground + The Gambler + Demons (The Possessed / The Devils)”, p.805, e-artnow