"Albert Schweitzer's Reverence for Life". http://www.wrf.org/news/news0014.htm. (June 8, 2003)


Gaarder, Jostein. Sophie's World. (New York: The Berkley Publishing Inc., 1996.).


Mickelsen, J. Carl. Readings in Modern Philosophy. http://www.class.uidaho.edu/mickelsen/readings.htm. (June 10, 2003)


Oliver, Martyn. History of Philosophy. (London: Octopus, 1997.).


Wolff, Rober Paul. About Philosophy. (6th ed.) (New Jersey: Prentice Hall, 1995.).


**see also: class notes and handouts**