When a man is getting worse, he understands his own badness less and less.

When a man is getting better he understands more and more clearly the evil that is still left in him. When a man is getting worse, he understands his own badness less and less.

A moderately bad man knows he is not very good; a thoroughly bad man thinks he is all right.

Badness is only spoiled goodness.

Really great moral teachers never do introduce new moralities: it is quacks and cranks who do that.

If no set of moral ideas were truer or better than any other, there would be no sense in preferring civilised morality to savage morality.