_the book: on the taboo against knowing who you are_ is quite a nice little read...
~
maybe a few other thought-provoking books:
the perennial philosophy / aldous huxley
island / aldous huxley
stranger in a strange land / robert a heinlein
godbody / theodoer sturgeon
cosmos / carl sagan
leaves of grass / walt whitman
the last temptation of christ / nikos kazantzakis (well, maybe when she turns 18

...)