Henry David Thoreau (2014). “Citizen Thoreau: Walden, Civil Disobedience, Life Without Principle, Slavery in Massachusetts, A Plea for Captain John Brown”, p.53, Graphic Arts Books
Brother Lawrence (of the Resurrection), Joseph de Beaufort (1874). “Brother Lawrence: The Practice of the Presence of God the Best Rule of a Holy Life, Being Conversations and Letters of Nicholas Herman of Lorraine (Brother Lawrence).”, p.62, New York ; Chicago ; Toronto : F.H. Revell