I am impressed when I go on the internet and see a lot of young people who've been influenced by the books, or I meet someone who tells me how it has changed their life. To me, that is much more real than sales figures.

When you have any kind of success in life, that's like the most dangerous moment that you're in because you're going to tend to think wow, I can just keep repeating what I've done. I'm a great person. People love me. All of the sudden they're giving me all of this attention. You get drunk on it and you lose your sense of balance and your sense of detachment. I know it's happened to me.

We're selfish to some degree, that's not a criticism and it doesn't mean that we are all narcissists. But in any situation our minds naturally evolve to what's in it for me? How does this affect me? Can this benefit me? Can this harm me? Then we might move on from that and have a more altruistic point of view about things but that's almost always our initial response.

People go into things for the wrong reasons.

Playing with appearances and mastering the arts of deception are among the aesthetic pleasures of life. They are also key components in the acquisition of power.

Things like reading a book or learning a language, or taking a walk - they're not stimulating. Your mind has to sort of learn how to deal with that kind of stimulation on its own. So that's a very important form of adversity.

I'm afraid I'm just too intense to have soft ideas, you know, about what to read when you're trying to pass the time.