5. Ways of Knowing the Eternal Powers of the Human Soul

When one first looks at the writings and publications that are sent out into the world from the perspective of spiritual science, as it is meant here, some of it will seem like a dream, like a fantasy. How could one possibly recognize that this physical body of man, which one sees with one's eyes and which external science investigates with its admirable methods, that this ordinary physical physical body is based on a finer body – whether you call it the etheric body or something else, it does not matter – that a finer body is based on it, a body that is absolutely invisible to the ordinary eye and [to the ordinary methods of research]; and that you can know something about this finer body, that seems, at first, to be rightfully something incredible.