He can see what is good for him, and what is not; what is right and what is not right; what gives him happiness, and what keeps him from it. The world itself becomes a scripture or book to the soul. If he does not consult it, he is thoughtless. But the one who consults with the world that he has created within himself, is wise. Sometimes in his world he has decided a certain thing is a sin or evil, and yet when it comes to an action, or thought, or speech, he cannot follow the moral he has already made for himself, either because of the weakness of his mind or body, or because of the weakness of his will. He fails to fulfil the law of his own world, of his own scripture that he has written. Thus he falls, and that is considered by him to be sin. It is the same with virtue. We have our own sins, our own virtues, which we have made from our own experiences.