Then there is the question of seeing and not seeing. This is understood by the mystics. It is being able to see at will and being able to overlook. It is not easy for a person to overlook, it is also something one must learn. There is much that one can see, that one must see, and there is much that one may not see, that it is better one does not see. If one cannot see, that is a disadvantage, but there is no disadvantage in not seeing something that one may not see; because there are so many things that could be seen, one may just as well avoid seeing them.