Edwin Land's comment after a 1977 Polaroid shareholder's meeting as quoted in Danny Miller "The Icarus Paradox: How Exceptional Companies Bring About Their Own Downfall; New Lessons in the Dynamics of Corporate Success, Decline, and Renewal"(p. 126), 1990.
William Wordsworth (1837). “The Complete Poetical Works of William Wordsworth: Together with a Description of the Country of the Lakes in the North of England, Now First Published with His Works ...”, p.349
Swami Vivekananda, Swami Adiswarananda (2006). “Vivekananda, World Teacher: His Teachings on the Spiritual Unity of Humankind”, p.102, SkyLight Paths Publishing
"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.