If you ever want to feel what being a baby seal being clubbed on the head by a Newfie feels like - read Godel Escher Bach: An Eternal Golden Braid by D. Hofstadter. OW!
Anyways, about Castaneda, so its fake and he made it up - so what? Im not reading it to learn how to cast spells and justify my peyote habit, but to better understand the minds of 70's climbers and writers.