Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A mystical thriller

This is a book I have reread countless times, and it is always fresh. It renews my appreciation for reality, for the simple material world, and reminds me of the mystical potential lying beneath the surface we see. I especially enjoy the heroine's journey from self-absorption to concern and compassion, and the hero who rises to the occasion to rescue his friends and incidentally the world. One of my favorite books.