"Zen and the Art of Motorcycle Maintenence" by Robert Pirsig....but not recently. I just found it in a pile, and it may be time to start it again.

Several of the Sci-Fi books by Marion Zimmer Bradley about "Darkover"...

and a rare little thing by Arthur Herzog.. The B.S. Factor: The Theory and Technique of Faking It in America
I wish I wish I could memorize it...and afford to buy a copy for everyone below the line... ;>)