What ancient books are easy to get possessed after reading?

The ancient books of Tao Te Ching are easy to be possessed. The Tao Te Ching is unpopular in China, but it is the second most widely printed book in the world, second only to the Bible. That's good. The Bible is a classic of major religions in the world, most of which are printed and distributed by their religious organizations. The Tao Te Ching is printed most by Germans, whose philosophy is the best in the world and their wisdom is good.