Lila. An Inquiry Into Morals

Zen and the Art of Motorcycle
Maintenance was like a first child. Maybe that will always be the best-loved
one. But this second child is the bright one. I think a lot of people will
argue with some of the ideas in Lila. There may be controversy. But if people
are still reading these two books a hundred years from now, I predict Lila will
be the one they consider the more important.
Robert M. Pirsig