I try to not think of those things that we cannot control, but I think if we continue to work with positive attitudes, conditions will be better for more people.

Technology is nothing. What’s important is that you have a faith in people, that they’re basically good and smart, and if you give them tools, they’ll do wonderful things with them.

I don’t believe I can really do without teaching.  The reason is, I have to have something so that when I don’t have any ideas and I’m not getting anywhere I can say to myself, “At least I’m living; at least I’m doing something; I’m making some contribution”—it’s just psychological.

For the last few weeks, I've been completely happy. I've got my next PSA in three weeks' time. It may well show my PSA is starting to go up, and the cancer's coming back. Totally to my surprise, I've acquired this sort of Buddhist Zen outlook. Well, the future doesn't exist. I'm well. I'm happy at the moment. I've had a wonderful, exciting life. I've made lots of mistakes. I've trampled on people - yak, yak, yak, as I discuss in my books. But at the moment, today, the sun is shining. I'm very well. It's not that I'm in denial, but I think, well, all right. It may be bad news in three weeks' time, but that's three weeks away. At the moment, I'm well.

It is a very rare affliction. A GP would expect to meet it once in a career and this form of brain cancer is unpredictable and dangerous. Usually, this tumour might give you only a two-year span since its discovery. I have had two operations and one course of radiotherapy and now three chemotherapies (one currently starting). My death is, in a sense, imminent. I say to myself: I am dying. Something in my head is hurrying to kill me.

I think that loss of speech, and of understanding of speech, and of understanding of writing, and of coherent writing – these losses will amount to the loss of my mind. I know what this feels like and it has no insides, no internal echo. Mind means talking to oneself. There wouldn't be any secret mind surviving in me.

For me, no word comes without prior thought. No sentence is generated without effort. No formulation is made automatically. I am faced continually with a mystery that other people have no conception of, the mystery of the generation of speech. There is no command situation, it goes back and back and back. Where the self lies at the heart of the utterance, the speaker generating the word, is always clouded. This is true for everyone, but for most people this is not something to think about. The generation of words is automatic. For me, that automatic link is broken. Word generation involves strain, guesswork, difficulty, imprecision.

The mystery of summoning up words. Where are they in the mind, in the brain? They appear to be an agency from nowhere. They exist somewhere in our ground or in our air. They come from unknown darkness. From a place we normally don't think about.