Why does everyone take for granted that we don't learn to grow arms, but rather, are designed to grow arms? Similarly, we should conclude that in the case of the development of moral systems; there's a biological endowment which in effect requires us to develop a system of moral judgment and a theory of justice, if you like, that in fact has detailed applicability over an enormous range.

Language and Politics (ed. AK Press, 2004) - ISBN: 9781902593821