Inazo Nitobe, "Bushido"
http://www.amazon.com/exec/obidos/tg/de
Albert Camus, "The Outsider"
http://www.amazon.com/exec/obidos/tg/de
Dan Millman, "Way of the Peaceful Warrior"
http://www.amazon.com/exec/obidos/tg/de
Herman Hesse, "Siddhartha"
http://www.amazon.com/exec/obidos/tg/de
Amazon is an interesting website.
You can read how others interpret the books you like.
some juvenile fiction:(ahhh nostalgic) :)
John Christopher, The Tripod Series*(4 books)
http://www.amazon.com/exec/obidos/tg/de
Monica Hughes, "Devil on my Back"
http://www.amazon.com/exec/obidos/tg/de
Many of Robert Arthurs "The Three Investigators"
http://www.amazon.com/exec/obidos/tg/de
http://www.amazon.com/exec/obidos/tg/de
Edward Packard, "The Cave of Time"(choose your own adventure***#1)
http://www.amazon.com/exec/obidos/tg/de
these books still stand out in my memory and probably impacted me in many ways...