Henry Ward Beecher (1887). “Beecher : Christian Philosopher, Pulpit Orator, Patriot and Philantropist: A Volume of Representative Selections from the Sermons, Lectures, Prayers, and Letters of Henry Ward Beecher”
Wayne W. Dyer (2009). “Being in Balance: 9 Principles for Creating Habits to Match Your Desires: Easyread Super Large 24pt Edition”, p.10, ReadHowYouWant.com