Ralph Waldo Emerson (2004). “A Dream Too Wild: Emerson Meditations for Every Day of the Year”, p.7, Unitarian Universalist Association of Congregations
Ralph Waldo Emerson (2010). “Essays and English Traits by Ralph Waldo Emerson: The Five Foot Shelf of Classics, Vol. V (in 51 Volumes)”, p.133, Cosimo, Inc.