I think one of the most important things that I’ve had to overcome is jealousy from the outside. Of learning that not everybody is going to be my friend.

Logistically, technically, shooting at 48 frames per second, working in 3D – those were all huge challenges. The biggest lessons were more logistical – decision making on a day to day level. It was a very complex schedule, always shifting. So, those were huge challenges. Stamina-wise, there were many, many challenges.

Tony was cautious. He suspected I’d wired the radio telescope up wrong. So we checked on another radio telescope on the site. The thing was pulsing nicely on mine but as we stood by the pen recorder of this other telescope, nothing happened. It was a horrible moment. And suddenly there it was, five minutes later because we had miscalculated when the telescope would see it. If we’d miscalculated by 25 minutes, we’d have all gone home and the story would be different.

We would constantly have to move because we couldn't quite afford the places that we were living. And sometimes we got evicted. And it was just very, very difficult as a child to try to understand that.

It could really have an impact if I get it right. Something that will get the next generation to see there is a way to think about politics that is not just the way we've been habituated to do it. I care about that and I think I can do it.

So it seems to be my responsibility, particularly to my children, also to my wife and friends, is not to be Pollyanna and pretend everything's okay no one would take me seriously if I said that but it's to be as present in their lives now as I can be so that in years to come, they don't feel either guilty or bad at my having been left out of their lives, that they feel still a very strong not a memory of particular actions but a memory of a complete family rather than a broken one. That seems to be something I can do or try to do.

But the satisfactions of compensation are notoriously fleeting. There is no saving grace in being confined to an iron suit, cold and unforgiving. The pleasures of mental agility are much overstated, inevitably—as it now appears to me—by those not exclusively dependent upon them. Much the same can be said of well-meaning encouragements to find nonphysical compensations for physical inadequacy. That way lies futility. Loss is loss, and nothing is gained by calling it by a nicer name. My nights are intriguing; but I could do without them.

I don't believe in an afterlife. I don't believe in a single or multiple godhead. I respect people who do, but I don't believe it myself. But there's a big but which enters in here. I am much more conscious than I ever was, for obvious reasons, of what it will mean to people left behind once I'm dead. It won't mean anything for me. But it will mean a lot to them. ... So in one curious way I've come to believe in the afterlife as a place where I still have moral responsibilities, just as I do in this life except that I can only exercise them before I get there. Once I get there, it'll be too late.

But if I was sitting in an armchair with bits and pieces of rubber sticking out of me and my son came over and said, you know, would you like a banana? Wink once for yes, wink twice for no, I dont think the interest of the conversation would get me past the sense that this is horrible. It's horrible for me but above all, horrible for them. There are things worse than death.

I see the future as something that could come crashing down very fast. Let me put it slightly by way of a comparison. Normal people, and I use the term very deliberately, by this not otherwise able situation - I'm disabled. I'm abnormal. Normal people dont think very much about the medium term future. They think only about the present, which is constantly changing for them or the very far future, which is just an abstraction. For me, its the other way around, my present never changes. So I dont really think about. But the medium term involves my death so I'm quite conscious of what is going to happen to me in about a year, maybe two years, who knows, whereas no one else I know thinks like that.