Mark Lawrence Rosenthal, Marla Prather, Ian Alteveer, Rebecca Lowery, Polly Apfelbaum (2012). “Regarding Warhol: Sixty Artists, Fifty Years”, p.195, Metropolitan Museum of Art
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