"Zen and the art of motorcycle maintenance" by Robert M. Pirsig. I read it this summer (as well as Der Prozess by Kafka, also recommended!) and I was constantly

"Zen and the art of motorcycle maintenance" by Robert M. Pirsig. I read it this summer (as well as Der Prozess by Kafka, also recommended!) and I was constantly re-reading sections, finding new insights. The book really changed the way I look at some things in life.