Abseiling down a cliff for Doc Martin in a suit, carrying a medical bag.

I hit a bit of lumpy tarmac driving my motorbike over the Pyrenees in the early 1980s. There was no safety barrier and I found myself riding along the edge of a precipice on half the width of the tyres for 100 yards.

I’ve been in six car accidents – none of them while I was driving.

Probably when I didn’t sleep for a week on drugs in 2009. I’d had a lot of meth and my heart felt like it was giving out. I remember climbing over balconies really high up, and I thought I was going to die, until I eventually fell asleep in someone’s garden.

The chief side effect of this pain is numbness in the extremities, filling me with the not irrational fear that I shall lose the ability to write. Without that ability, I feel sure in advance, my “will to live” would be hugely attenuated. I often grandly say that writing is not just my living and my livelihood but my very life, and it’s true. Almost like the threatened loss of my voice, which is currently being alleviated by some temporary injections into my vocal folds, I feel my personality and identity dissolving as I contemplate dead hands and the loss of the transmission belts that connect me to writing and thinking.

And even if my voice goes before I do, I shall continue to write polemics against religious delusions, at least until it’s hello darkness my old friend. In which case, why not cancer of the brain? As a terrified, half-aware imbecile, I might even scream for a priest at the close of business, though I hereby state while I am still lucid that the entity thus humiliating itself would not in fact be “me.” (Bear this in mind, in case of any later rumors or fabrications.)

Before I was diagnosed with esophageal cancer a year and a half ago, I rather jauntily told the readers of my memoirs that when faced with extinction I wanted to be fully conscious and awake, in order to “do” death in the active and not the passive sense. And I do, still, try to nurture that little flame of curiosity and defiance: willing to play out the string to the end and wishing to be spared nothing that properly belongs to a life span. However, one thing that grave illness does is to make you examine familiar principles and seemingly reliable sayings. And there’s one that I find I am not saying with quite the same conviction as I once used to: In particular, I have slightly stopped issuing the announcement that “Whatever doesn’t kill me makes me stronger.”

Myself, I love the imagery of struggle. I sometimes wish I were suffering in a good cause, or risking my life for the good of others, instead of just being a gravely endangered patient. Allow me to inform you, though, that when you sit in a room with a set of other finalists, and kindly people bring a huge transparent bag of poison and plug it into your arm, and you either read or don’t read a book while the venom sack gradually empties itself into your system, the image of the ardent soldier or revolutionary is the very last one that will occur to you. You feel swamped with passivity and impotence: dissolving in powerlessness like a sugar lump in water.

There is an even longer shot that I do propose to attempt even though its likely efficacy lies at the outer limits of probability. I am going to try to have my entire DNA “sequenced,” along with the genome of my tumor. ... So perhaps I will be able to contribute a little bit to enlarging the knowledge that will help future generations.

My chief consolation in this year of living dyingly has been the presence of friends. I can’t eat or drink for pleasure anymore, so when they offer to come it’s only for the blessed chance to talk. Some of these comrades can easily fill a hall with paying customers avid to hear them: they are talkers with whom it’s a privilege just to keep up. Now at least I can do the listening for free. Can they come and see me? Yes, but only in a way. So now every day I go to a waiting room, and watch the awful news from Japan on cable TV (often closed-captioned, just to torture myself) and wait impatiently for a high dose of protons to be fired into my body at two-thirds the speed of light. What do I hope for? If not a cure, then a remission. And what do I want back? In the most beautiful apposition of two of the simplest words in our language: the freedom of speech.