It takes about a year to write an opera for me, but not a really a year of writing. I'm touring at the same time, and I'm playing, sometimes doing smaller projects.[The opera] Akhnaten fits in with Gandhi and Einstein, so that forms a trilogy in a way.I picked people who were these kind of larger than life characters, who kind of changed the world they lived in by almost the force of their personality and their inventiveness. People that I think not only do I admire but I think they're admirable people.

Finally, ultimately, you write music for yourself. I mean, I need a public, I need people to play, I need everything else. I'm not working in isolation. But finally the man that writes the music is alone. And I have to respond to those criteria which are almost like inner needs or inner responses.

What came to me as a revelation was the use of rhythm in developing an overall structure in music.

The problem with listening, of course, is that we don't. There's too much noise going on in our heads, so we never hear anything. The inner conversation simply never stops. It can be our voice or whatever voices we want to supply, but it's a constant racket. In the same way we don't see, and in the same way we don't feel, we don't touch, we don't taste.

The work I've done is the work I know, and the work I do is the work I don't know. I don't know what I'm doing.

Satyagraha is an opera which I wrote for the Netherlands Opera, so it uses an orchestra of around fifty, a chorus of forty, and there are about seven soloists. The opera ... Satyagraha means truthful, so it was a name [Mahatma] Gandhi used to describe his civil disobedience movement.

I shift between mediums very frequently. Instead of taking a break from writing, I just write in a different medium or in a different way or for a different purpose, so that I don't actually stop writing - I just go to something else. Like going from a big symphony to a piano piece is great and very refreshing, I find. And then going from that to a big concerto, and then having to go out and play.