George Washington (1858). “The Writings: Being His Correspondence, Addresses, Messages, and Other Papers, Official and Private, Selected and Published from the Original Manuscripts : with a Life of the Author, Notes and Illustrations”, p.36
Friedrich Nietzsche, Maudemarie Clark, Brian Leiter (1997). “Nietzsche: Daybreak: Thoughts on the Prejudices of Morality”, p.195, Cambridge University Press