Aside from scriptures, my favorite book by far is the Brothers Karamazov by Dostoyevsky (with Crime and Punishment a close second). I love how Dostoyevsky is able to go into the psychology of the human brain, and in the brothers karamazov he captures the Russian spirit quite well. It is a long read, and most will find it tedious but it is my favorite book by far.
i myself have to many favorites in life. the way i put it, every book is as unique as the author who made it, to me u cant single out people because every bodys different so u can have a lot of favorite books.
I couldn't single out one book, but when I first started reading seriously I began reading Tarzan novels by Edgar Rice Burroughs. If you're going by the movies or cartoons, you wouldn't know this, but those are good books: solid, well written, substantial adventure-fantasy novels.