Terry Pratchett plans to hand over the Discworld series to his daughter Rhianna, he reveals in this week's New Statesman.

In an interview with Laurie Penny - who has returned to the NS as a contributing editor - the author, campaigner and "professional morbid bastard" talks about his life and work. They discuss his diagnosis with posterior cortical atrophy, a rare form of Alzheimer's, in 2007. Since then, his health has declined markedly:

He has lost the ability to use a keyboard altogether and can do very little with a pen. His most recent four books have been written entirely by dictation, and with the help of his assistant of 12 years, Rob Wilkins. "I can no longer type, so I use TalkingPoint and Dragon Dictate," Pratchett says, as Rob drives us to the café in a rather unexpected large gold Jaguar. "It's a speech-to-text program," he explains, "and there's an add-on for talking which some guys came up with." So, how does that differ from using his hands to write? "Actually, it's much, much better," he says. I hesitate, and he senses scepticism. "Think about it! We are monkeys," says Prat­chett. "We talk. We like talking. We are not born to go . . ." He turns and makes click-clack motions, like somebody's fusty grandfather disapproving of the internet.

Pratchett's assistant of 12 years, Rob Wilkins, also reveals that earlier this month, the author suffered an atrial fibrillation in the back seat of a New York taxi. Were it not for emergency CPR, he would have died.

What happened next is that Pratchett collapsed. “I had to kneel on the back seat of the taxi and give him CPR,” Rob says. “It was fingers down throat stuff. He nearly died.” The author was rushed to hospital, but recovered swiftly. Doctors told him that he had suffered an atrial fibrillation, caused by the cumulative effect of drugs he had been prescribed for high blood pressure and made worse by his busy touring schedule. He now downplays the incident. “I once heard it mentioned that signing tours can kill you quicker than drugs, booze and fast women,” he tells the New Statesman. “Some of which I haven’t tried.” It’s made him wonder if he should slow down and devote more time to writing and his family, but he enjoys life on the road too much to give it up.

Nonetheless, it has focused attention on the future of his work, as well as on his only child, Rhianna Pratchett (herself an accomplished writer). Penny writes:

[Rhianna] will be a co-writer on the BBC Discworld series The Watch, news of which has had fans like me chewing their cheeks in excitement. Mine may never recover after hearing some particularly exciting casting details that I'm absolutely not allowed to tell you about. Run by Pratchett's new production company, Narrativia, The Watch will continue the well-loved City Watch saga where the books left off, and Rhianna will be an important member of the writing team. The author tells me that he will be happy for her to continue writing the Discworld books when he is no longer able to do so. "The Discworld is safe in my daughter's hands," Pratchett assures me. Rhianna has grown up immersed in her father's universe and knows it inside out. Listening to him talking about his daughter, I realise it is the first time I've heard him acknowledge the possibility of not being able to write any more.

Pratchett says that his reaction to this fact is mostly to be "incredibly angry".

“Anger is wonderful. It keeps you going. I’m angry about bankers. About the government. They’re fecking useless.” He really does say “fecking”. “I know what Granny Weatherwax [a no-nonsense witch who crops up in several Discworld novels] would say to David Cameron. . ."

And what is that? Buy this week's New Statesman to find out.

The NS will be available from newsagents on Thursday, 15 November. Single copies can be purchased here.