If you wanted to be unstoppably hectored by someone in tie and blazer about how the Edward Heath government had committed treason by taking us into the Common Market in 1972 and then find out the the name of the acrobat who performed a quadruple back-somersault on to a chair at the New York Hippodrome in 1915, and the artiste who caught him, Norris McWhirter was your man.

And you can add to that the fact that Norris, along with his twin brother Ross, created the Guinness Book of Records, which had sold more than 75m copies in 37 languages by the time his involvement ended in 1996.

We will never see his like again, not because the world doesn’t teem with libertarian ideologues, nor with grown men who know too much about the minutiae of stuff; but because combining these two disciplines successfully in public seems beyond our wit in 2017.

No, Cujo was a standard novel in chapters when it was created. But I can remember thinking that I wanted the book to feel like a brick that was heaved through your window at you. I’ve always thought that the sort of book that I do-and I’ve got enough ego to think that every novelist should do this-should be a kind of personal assault. It ought to be somebody lunging right across the table and grabbing you and messing you up. It should get in your face. It should upset you, disturb you. And not just because you get grossed out. I mean, if I get a letter from somebody saying, I couldn’t eat my dinner, my attitude is, Terrific!

TIM CURRY: I read It when I got the role and I thought it was wonderfully scary, because clowns are scary. It’s the exaggeration. Pennywise always understood what each character was scared of, and provided it. And I could see what fun it would be to be that scary. They came up with such a great makeup. There’s the classic scene where little Georgie floats his paper boat down the gutter and puts his hand down to try and get it back, and is grabbed by Pennywise, who says: “Down here we float …” The boy playing Georgie [Tony Dakota] yanked his hand away and said, “You’re scaring me!” I said, “I’m sorry, I’m supposed to.”

These stories were written years ago, but Stillson and Rennie bear enough of a resemblance to the current resident of the White House for me to flatter myself I have a country-fair understanding of how such men rise: first as a joke, then as a viable alternative to the status quo, and finally as elected officials who are headstrong, self-centered and inexperienced. Such men do not succeed to high office often, but when they do, the times are always troubled, the candidates in question charismatic, their proposed solutions to complex problems simple, straightforward and impractical. The baggage that should weigh these hucksters down becomes magically light, lifting them over the competition like Carl Fredricksen in the Pixar film Up. Trump’s negatives didn’t drag him down; on the contrary, they helped get him elected.

The story itself, which has become more familiar than Hubbard or any of his disciples ever intended, revolves around the figure of Xenu, the tyrannical dictator of the Galactic Confederation. Millions of years ago, Xenu, faced with an overpopulation crisis, threw hordes of his own people into volcanoes on the planet Earth-then known as Teegeeack-and blew them up with atomic bombs. Their spirits, called thetans, survive to the present day, clinging to unsuspecting humans, and they can only be removed through dianetic auditing, a form of talk therapy that clears the subject of its unwanted passengers.

One of the church members who read this account was screenwriter and director Paul Haggis, who was a devoted Scientologist for over three decades before resigning in an ugly public split. Haggis told Lawrence Wright, the author of the seminal New Yorker piece that became the exposé Going Clear, that after finishing the story, he got the wild idea that it was some sort of insanity test-if you believed it, you were kicked out. When he asked his supervisor for clarification, he was informed: “It is what it is.” Haggis read it again, but the same thought continued to resound in his brain: “This is madness.”

Hubbard himself had another term for it. In an insertion to the original manuscript, squeezed between two lines, the author left his own description of what he had written: “Very space opera.”

It’s a strange experience, walking the streets with this bearded compendium of knowledge. Every corner provokes a reminiscence, such as the graffiti which he recognises as the work of Bill Drummond of art-pop group the KLF, who came round to his house to show him the film of them burning a million pounds. Do they regret it now, I ask?

“It’s not so much that they regret it, but I think it haunts them. I heard a brilliant definition of haunting: ‘That which haunts us is that which we do not or do not completely understand.’ And I thought, that makes sense. Often we don’t understand our own actions. And certainly, if we’d gone to the Isle of Jura and burned a million quid, we would have a lot of questions!”