The first thing to get clear about Christian morality between man and man is that in this department Christ did not come to preach any brand new morality. The golden rule of the New Testament (Do as you would be done by) is a summing up of what everyone, at bottom, had always known to be right. Really great moral teachers never do introduce new moralities: it is quacks and cranks who do that. As Dr Johnson said, ‘People need to be reminded more often than they need to be instructed.’ The real job of every moral teacher is to keep on bringing us back, time after time, to the old simple principles which we are all so anxious not to see; like bringing a horse back and back to the fence it has refused to jump or bringing a child back and back to the bit in its lesson that it wants to shirk.

The second thing to get clear is that Christianity has not, and does not profess to have, a detailed political programme for applying ‘Do as you would be done by’ to a particular society at a particular moment. It could not have. It is meant for all men at all times and the particular programme which suited one place or time would not suit another. And, anyhow, that is not how Christianity works. When it tells you to feed the hungry it does not give you lessons in cookery. When it tells you to read the Scriptures it does not give you lessons in Hebrew and Greek, or even in English grammar. It was never intended to replace or supersede: it is rather a director which will set them all to the right jobs, and a source of energy which will give them all new life, if only they will put themselves at its disposal.