You would not probably believe me, but almost everything that you ever wanted to know regarding spirituality, right from how to lead our daily lives, the importance of certain things that we are asked to do, how to do dhyanam, proof of God, how the society should be, how to approach saints and Mahatmas, how to avoid pitfalls, how to raise from pit falls, etc etc .. everything is there in Mastergaru's books. There is not only what, but also how and why. If I may say so, the only way for us to even think about spirituality correctly, is through Mastergaru's books.