Alexander, Richard D. 1987. The Biology of Moral Systems. New York : Aldine de Gruyter.

Burt, E. A., ed. 1955. The Teachings of the Compassionate Buddha. New York : Mentor Books.

Cosmides, Leda, and JohnTooby. 1992. “Cognitive Adaptations for Social Exchange  .” In The Adapted Mind, ed. J. H.Barkow, L.Cosmides, and J.Tooby, pp. 163–228. New York : Oxford Univ. Press.

Pinker, Steven, and PaulBloom. 1992. “Natural Language and Natural Selection  .” In The Adapted Mind, ed. J. H.Barkow, L.Cosmides, and J.Tooby, pp. 451–93. New York : Oxford Univ. Press.

Ruse, Michael. 1986. Taking Darwin Seriously. Oxford : Basil Blackwell.

Ruse, Michael. 1994a. “Evolutionary Theory and Christian Ethics: Are They in HarmonyZygon: Journal of Religion and Science  29 (March): 5–24.

Ruse, Michael. 1994b. “From Belief to Unbelief‐‐and Halfway Back. Zygon: Journal of Religion and Science  29: (March): 25–35.

Williams, George C.1989. “A Sociological Expansion of Evolution and Ethics  .” In Evolution and Ethics, ed. J.Paradis and G. C.Williams, pp. 179–214, 228–36. Princeton , N.J. : Princeton Univ. Press.

Wilson, David Sloan. 1989. “Species of Thought: A Comment on Evolutionary Epistemology. Biology and Philosophy  5: 37–62.