That's a really good question. I set out to write the book because I wanted to find out why I was restless in situations where I supposedly should have been perfectly content. You know, literally sitting on a mountaintop, seeing the countryside, I would still feel restless. And I think I found a kind of answer. To put it very bluntly, if you are successful in following the Buddhist precepts, you cease to be human. In fact, I think one can find support for this view in the Buddhist sources themselves. If you succeed to cease desiring, you're no longer human. Of course, the Buddha himself supposedly remained enmeshed with humanity to teach others. But if you do succeed in obtaining the state that you're supposed to obtain, then you're no longer human. And that kind of invalidates the questions because a psychology would need to be developed for understanding those kinds of minds - they are not regular human minds.