Elbert Hubbard (2009). “Love, Life & Work: Being a Book of Opinions Reasonably Good-Natured Concerning How to Attain the Highest Happiness for One's Self with the Least Possible Harm to Others”, p.40, The Floating Press
Henry David Thoreau (2014). “Citizen Thoreau: Walden, Civil Disobedience, Life Without Principle, Slavery in Massachusetts, A Plea for Captain John Brown”, p.225, Graphic Arts Books
"Three Goals to Guide You". Thomas S. Monson’s address at the General Conference of the Church of Jesus Christ of Latter-day Saints, www.lds.org. October 2007.