“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.”

“The distinction between pretending you are better than you are and beginning to be better in reality is finer than moral sleuth hounds conceive.”

“Devils are depicted with bats' wings and good angels with birds' wings, not because anyone holds that moral deterioration would be likely to turn feathers into membrane, but because most men like birds better than bats.”

“A thing may be morally neutral and yet the desire for that thing may be dangerous.”

“Three hundred years ago people in England were putting witches to death. Was that what you call the 'Rule of Human Nature or Right Conduct?’ But surely the reason we do not execute witches is that we do not believe there are such things. If we did—if we really thought that there were people going about who had sold themselves to the devil and received supernatural powers from him in return and were using these powers to kill their neighbours or drive them mad or bring bad weather—surely we would all agree that if anyone deserved the death penalty, then these filthy quislings did? There is no difference of moral principle here: the difference is simply about matter of fact. It may be a great advance in knowledge not to believe in witches: there is no moral advance in not executing them when you do not think they are there. You would not call a man humane for ceasing to set mousetraps if he did so because he believed there were no mice in the house.”

“Strictly speaking, there are no such things as good and bad impulses. Think...of a piano. It has not got two kinds of notes on it, the 'right' notes and the 'wrong' ones. Every single note is right at one time and wrong at another. The Moral Law is not any one instinct or set of instincts: it is something which makes a kind of tune (the tune we call goodness or right conduct) by directing the instincts.”

“I'm ready to accept Jesus as a great moral teacher, but I don't accept His claim to be God.' That is the one thing we must not say. A man who was merely a man and said the sort of things Jesus said would not be a great moral teacher ... You must make your choice. Either this man was, and is, the Son of God: or else a madman or something worse. You can shut Him up for a fool ... or you can fall at His feet and call Him Lord and God. But let us not come with any patronizing nonsense about His being a great human teacher. He has not left that open to us.”