As I sit at my table, for days, months, years, slowly adding new words to the empty page, I feel as if I am creating a new world, as if I am bringing into being that other person inside me, in the same way someone might build a bridge or a dome, stone by stone. The stones we writers use are words. As we hold them in our hands, sensing the ways in which each of them is connected to the others, looking at them sometimes from afar, sometimes almost caressing them with our fingers and the tips of our pens, weighing them, moving them around, year in and year out, patiently and hopefully, we create new worlds. The writer’s secret is not inspiration – for it is never clear where it comes from – it is his stubbornness, his patience. That lovely Turkish saying – to dig a well with a needle – seems to me to have been said with writers in mind.

Treat writing as a job. Be disciplined. Lots of writers get a bit OCD-ish about this. Graham Greene famously wrote 500 words a day. Jean Plaidy managed 5,000 before lunch, then spent the afternoon answering fan mail. My minimum is 1,000 words a day – which is sometimes easy to achieve, and is sometimes, frankly, like shitting a brick, but I will make myself stay at my desk until I’ve got there, because I know that by doing that I am inching the book forward. Those 1,000 words might well be rubbish – they often are. But then, it is always easier to return to rubbish words at a later date and make them better.

So far they are conforming to pattern, alas! I mean I am suffering from the usual delusion that the play was ready before we went into production. It happens every time. I give my publisher the finished text of the play so that it can be published not too long after the opening in London, but by the time the galleys arrive they’re hopelessly out-of-date because of all the changes I’ve made during rehearsals. This time I gave them Hapgood and told them that it was folly to pretend it would be unaltered, but I added, “I think it won’t be as bad as the others.” It turned out to be worse. Yesterday I realized that a chunk of information in the third scene ought to be in the second scene, and it’s like pulling out entrails: as in any surgery there’s blood. As I was doing it I watched a documentary about Crick and Watson’s discovery of the structure of DNA—the double helix. There was only one way all the information they had could fit but they couldn’t figure out what it was. I felt the same. So the answer to your question is that the rehearsals are going well and enjoyably, but that I’m very busy with my pencil.

I’ve been emphasising here the small and the private, because essentially that’s what my work is about. One person writing in a quiet room, trying to connect with another person, reading in another quiet – or maybe not so quiet – room. Stories can entertain, sometimes teach or argue a point. But for me the essential thing is that they communicate feelings. That they appeal to what we share as human beings across our borders and divides. There are large glamorous industries around stories; the book industry, the movie industry, the television industry, the theatre industry. But in the end, stories are about one person saying to another: This is the way it feels to me. Can you understand what I’m saying? Does it also feel this way to you?

Our young should prepare to seek their fortunes in this golden age. It is silly to moan that properties and cars are going out of their reach. They will never be out of reach of those who seize their opportunities. Of course those on profit sharing schemes and stock options will do better than those on salaries. But even those on salaries will have their salaries double in the next 10 years of high growth. The big winners will be those who find a vein of gold and dig it out. But you have to work to find it and dig it out. Those who bemuse and befuddle themselves into believing the great opportunities are already behind them will regret it when they see their more discerning and perceptive contemporaries prosper.

The sky has turned brighter. There is a glorious rainbow that beckons those with the spirit of adventure. And there are rich findings at the end of that rainbow. To the young and the not too old, I say, look at the horizon, find that rainbow, go ride it. Not all will be rich; quite a few will find a vein of gold; but all who pursue that rainbow will have a joyous and exhilarating ride and some profit.