15. How Are the Eternal Forces of the Human Soul Investigated?

Thus, dear ones, one can never explore the eternal powers of the human soul from what a person consciously practices in relation to the physical environment and in relation to his outer life; but it is necessary that, from what a person experiences within himself in ordinary physical life, first that which can be inwardly grasped in the manner described is separated. But it is not enough for a person to go through the path just described; for by doing so, he would never come to anything other than to feel, in a sense of eternal departure, as if in a darkness of soul. So that is not enough.