Actings Books! What to read?

I would like to purchase 2 or 3 books on acting. When I say acting I mean the craft of acting rather than a book on how to get an audition or break into Holywood. I would like to read the Canonical, the great, the one that everyone should read book on acting. For example I have heard that 'Sanford Meisner on Acting' is a great book. Your thoughts? Recomendations.......