Christianity . . . does not say that in spite of appearances, we are all murders or burglars or crooks or sexual perverts at heart; it does not say that we are totally depraved, in the sense that we are incapable of feeling or responding to any good impulses whatever. The truth is much deeper and more subtle than that. It is precisely when you consider the best in man that you see there is in each of us a hard core of pride or self-centeredness which corrupts our best achievements and blights our best experiences. It comes out in all sorts of ways—in the jealousy which spoils our friendships, in the vanity we feel when we have done something pretty good, in the easy conversion of love into lust, in the meanness which makes us depreciate the efforts of other people, in the distortion of our own judgement by our own self-interest, in our fondness for flattery and our resentment of blame, in our self-assertive profession of fine ideals which we never begin to practise.