Levels Quotes - Page 19
Charles Sanders Peirce, Nathan Houser, Christian J.W. J. W. Kloesel (1992). “The Essential Peirce, Volume 1: Selected Philosophical Writings? (1867–1893)”, p.113, Indiana University Press
Arnold Mindell (1995). “Sitting in the Fire: Large Group Transformation Using Conflict and Diversity”, Not Applicable
Ann Landers (1978). “The Ann Landers encyclopedia, A to Z: improve your life emotionally, medically, sexually, socially, spiritually”, Galahad Books
"Computer Science as Empirical Inquiry: Symbols and Search". Communications of the ACM 19 (3), (p. 122), March 1976.
Vladimir Ilʹich Lenin, V. I. Lenin (1927). “Collected works of V. I. Lenin”
Theodore Roosevelt (2006). “History as Literature and Other Essays”, p.19, Cosimo, Inc.