Referring to his early days at a boarding school in Salisbury, he recalled how one of the (unnamed) masters “pulled me on his knee and put his hand inside my shorts.”

He said other children in his school peer group had been molested by the same teacher but concluded: “I don’t think he did any of us lasting harm.”

“I am very conscious that you can’t condemn people of an earlier era by the standards of ours. Just as we don’t look back at the 18th and 19th centuries and condemn people for racism in the same way as we would condemn a modern person for racism, I look back a few decades to my childhood and see things like caning, like mild pedophilia, and can’t find it in me to condemn it by the same standards as I or anyone would today,” he said.

He said the most notorious cases of pedophilia involve rape and even murder and should not be bracketed with what he called “just mild touching up.”

There are shades of being abused by a priest, and I quoted an example of a woman in America who wrote to me saying that when she was 7 years old, she was sexually abused by a priest in his car.

“At the same time, a friend of hers, also 7, who was of a Protestant family, died, and she was told that because her friend was Protestant, she had gone to hell and will be roasting in hell forever.

“She told me, of those two abuses, she got over the physical abuse; it was yucky, but she got over it. But the mental abuse of being told about hell, she took years to get over. "

All three of the boarding schools I attended employed teachers whose affections for small boys overstepped the bounds of propriety. That was indeed reprehensible. Nevertheless, if, fifty years on, they had been hounded by vigilantes or lawyers as no better than child murderers, I should have felt obliged to come to their defence, even as the victim of one of them (an embarrassing but otherwise harmless experience).

The Roman Catholic Church has borne a heavy share of such retrospective opprobrium. For all sorts of reasons I dislike the Roman Catholic Church. But I dislike unfairness even more, and I can’t help wondering whether this one institution has been unfairly demonized over the issue, especially in Ireland and America… We should be aware of the remarkable power of the mind to concoct false memories, especially when abetted by unscrupulous therapists and mercenary lawyers. The psychologist Elizabeth Loftus has shown great courage, in the face of spiteful vested interests, in demonstrating how easy it is for people to concoct memories that are entirely false but which seem, to the victim, every bit as real as true memories. This is so counter-intuitive that juries are easily swayed by sincere but false testimony from witnesses.

I was myself sexually abused by a teacher when I was about nine or ten years old. It was a very unpleasant and embarrassing experience, but the mental trauma was soon exorcised by comparing notes with my contemporaries who had suffered it previously at the hands of the same master.

Thank goodness, I have never personally experienced what it is like to believe – really and truly and deeply believe ­– in hell. But I think it can be plausibly argued that such a deeply held belief might cause a child more long-lasting mental trauma than the temporary embarrassment of mild physical abuse.

Anecdotes and plausibility arguments, however, need to be backed up by systematic research, and I would be interested to hear from psychologists whether there is real evidence bearing on the question. My expectation would be that violent, painful, repeated sexual abuse, especially by a family member such as a father or grandfather, probably has a more damaging effect on a child’s mental well-being than sincerely believing in hell. But ‘sexual abuse’ covers a wide spectrum of sins, and I suspect that research would show belief in hell to be more traumatic than the sort of mild feeling-up that I suffered.