Ralph Waldo Emerson (2004). “A Dream Too Wild: Emerson Meditations for Every Day of the Year”, p.7, Unitarian Universalist Association of Congregations
Sue Patton Thoele (2008). “The Mindful Woman: Gentle Practices for Restoring Calm, Finding Balance, and Opening Your Heart”, p.9, New Harbinger Publications
John Ruskin (1873). “The Eagle's Nest: Ten Lectures on the Relation of Natural Science to Art, Given Before the University of Oxford in Lent Term, 1872”, p.34
"A Conversation with Marianne Williamson: Powerful pioneer in new thought and spirituality". Interview with Maranda Pleasant, www.marandapleasantmedia.com.
"Greg Laurie: Watered-Down Mainline Christianity Is a Sign of the End Times (Interview)". Interview with Samuel Smith, www.christianpost.com. August 29, 2016.