I still like to keep tapes of the few minutes before the final take, things that happen before the session. Maybe it's superstitious, but I believe if I had done things differently - if I had walked around the studio or gone out - it wouldn't have turned out that way.
All artists are people of growth. It's like food, you take the good and leave the rest.
After that, Kasparov stepped back from chess which is, and I want this to be clear, not good for chess in general at all. As a whole, the current situation in the chess world leaves a lot to be desired.

