“Darwinism can be used to back up two mad moralities, but it cannot be used to back up a single sane one. The kinship and competition of all living creatures can be used as a reason for being insanely cruel or insanely sentimental; but not for a healthy love of animals … That you and a tiger are one may be a reason for being tender to a tiger. Or it may be a reason for being cruel as the tiger. It is one way to train the tiger to imitate you, it is a shorter way to imitate the tiger. But in neither case does evolution tell you how to treat a tiger reasonably, that is, to admire his stripes while avoiding his claws.
If you want to treat a tiger reasonably, you must go back to the garden of Eden. For the obstinate reminder continues to recur: only the supernaturalist has taken a sane view of Nature.”
Chesterton, G.K., Orthodoxy, John Lane, London, pp. 204–205, 1927.