Managers all over the world will go crazy when their artists are not touting the party line and making things pretty in the way that they're supposed to, but it's different when your manager is your husband. It's contrary to your soul. That commercial interest presses in upon your whole personal life.

If you look at the gifted sportsman, like Tiger Woods, or Ryan Giggs, you can see how they have been built up to be so much more than one person could ever be.

In the Soviet Union, for instance, the pressure on the chess stars was immense. When Boris Spassky came home after losing that match, he found he no longer had an apartment in Moscow.

You know, and the fact that Nina Simone had to start playing in clubs and sing because her parents had moved north to support her music education. You know, so she had to sing. She had to make a living 'cause she was supporting her family. So poverty and race put her in this place which, you know, created enormous success, but it's not what her psyche was all about.

There is so much investment in it of people's labor time that it will never make money. But there are other documentaries that you might make that are sort of on assignment for television that turn around in three to six months. Then the margin can be much be better for you because you're not spending three-and-a-half years on it. So I think if you're doing documentary films, that's sort of the way to look at it.

It has a lot to do with just sort of trust in the relationship that builds between the filmmaker and the subject. There are some people who will never be relaxed in front of a camera, and in some ways that's my failing as a filmmaker to not put them at ease. It's also a function of time, and if you have that type of time.

I think all of us, looking back on our careers and our lives, there'll probably be a "road not taken" that we'll regret and mourn. Certainly, artists will always feel that way, especially when the path taken was more commercial than the one not taken.