George Washington, United States. President (1789-1797 : Washington) (1847). “Washington's Farewell Address to the People of the United States of America: Published in September, 1796”, p.9
Friedrich Nietzsche, Maudemarie Clark, Brian Leiter (1997). “Nietzsche: Daybreak: Thoughts on the Prejudices of Morality”, p.59, Cambridge University Press
Friedrich Nietzsche, Maudemarie Clark, Brian Leiter (1997). “Nietzsche: Daybreak: Thoughts on the Prejudices of Morality”, p.195, Cambridge University Press