Traditional ethics has established itself as an independent discipline
by postulating a ''good'' independent of all particular desires. It h
as been assumed that this ''good'' was something beyond nature, and th
at man had the capacity to reach out for it by transcending his natura
l inclinations. In this article, the traditional picture of morality i
s confronted with modern evolutionary biology. It is shown that goal-d
irectedness, choice, and social behavior can be accounted for in a nat
uralistic framework. The purport of concepts like free will, good, and
the meaning of life, however, changes dramatically. Specifically, our
tendency to objectify values, to postulate an absolute good and an ul
timate meaning of life, is unmasked as a strategy of mental territoria
lity which reveals us as typical participators in the struggle for exi
stence.