But whatever else the worst doctrine of depravity may have been, it was a product of spiritual conviction; it had nothing to do with remote physical origins. Men thought mankind wicked because they felt wicked themselves. If a man feels wicked, I cannot see why he should suddenly feel good because somebody tells him that his ancestors once had tails. Man’s primary purity and innocence may have dropped off with his tail, for all anybody knows. The only thing we all know about that primary purity is that we have not got it.
G. K. Chesterton, All Things Considered, p. 213