
Interview http://www.youtube.com/watch?v=n9pXeVx5HKA (April 7, 2010), Wildlife Society.
Wolves: Behavior, Ecology and Conservation (2003)
Interview http://www.youtube.com/watch?v=n9pXeVx5HKA (April 7, 2010), Wildlife Society.
Wolves: Behavior, Ecology and Conservation (2003)
Source: The Martyrdom of Man (1872), Chapter II, "Religion", pp. 143-4.
Source: Better-World Philosophy: A Sociological Synthesis (1899), Egoism and Altruism, p. 119
The System of Ethics According to the Principles of the Wissenschaftslehre (1798; Cambridge, 2005), p. 320.