"Some thoughts on the real world by one who glimpsed it and fled". Bill Watterson's commencement speech at the Kenyon College in Gambier, Ohio, www.graduationwisdom.com. May 20, 1990.
Henry David Thoreau, Barry Andrews (2005). “True Harvest: Readings from Henry David Thoreau for Every Day of the Year”, p.107, Unitarian Universalist Association of Congregations