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