Therefore it must be understood that all man learns and experiences in this life in the world, all that he calls learning or knowledge, is only used in the world where he is learning, and bears the same relation to himself as the eggshell does to the chick; but when he takes the path to the inner life that learning and knowledge are of no use to him. The more he is capable of forgetting that knowledge, of unlearning it, the more capable he is of attaining the object for which he treads the spiritual path. It has been a great struggle for those learned and experienced in the outer life, to think that after their great advancement in worldly knowledge they have to go back again. Often they cannot understand; many among them think it is strange, and are therefore disappointed.