In the intellectual lineage of sociobiology (understood as evolutionar
y social science), this article considers the place of moral discourse
in the evolution of emergent systems for mediating behavior. Given th
at humans share molecular systems, reflex systems, drive systems, emot
ional systems, and cognitive systems with chimpanzees, why is it that
human behavior is so radically different from chimpanzee behavior! The
answer is that, unlike chimps, humans possess symbolic systems, empow
ering them to override chimplike default morality in favor of symbolic
ally mediated moral codes. The article concludes with a brief discussi
on of the power of religious symbols to influence moral behavior by re
programming emotional systems.