Abstract
The relationship between biology, the science of organisms, and ethics, the philosophy of morality, has never been a particularly happy or fruitful one. Indeed, for much of this century, attempts to relate our animal nature to our sense of right and wrong have been taken as paradigms of how not to do moral philosophy. It has been argued that such systems of “evolutionary ethics” commit the most basic fallacies, and can serve only as dreadful warnings to those who would cross interdisciplinary divides.