One might think it uninteresting to live as spirit and not as body. It might seem uninteresting to one who has not experienced on this earth how to be able to live independently of the physical body. All mysticism has been based on this: how to be able to live independently of the physical body, how to live on earth as spirit, even for five minutes a day. This gives a conviction of being able to live and yet be independent of the physical body. It is an experience in life, an education in the highest knowledge. Once a person has realized how he can exist without the physical body it produces a faith that gives an ultimate conviction which nothing can change.