Addendum I. The fear of an impoverishment of the life of the soul through an ascent to the spirit is to be found only in those personalities that know the spirit only in a sum of concepts abstracted from sensory perceptions. One who in spiritual seeing raises himself to a life that surpasses the life of the senses in content and in concreteness, cannot know this fear. For it is only in abstractions that the sensory existence grows pale; in the “spiritual seeing,” for the first time it appears in its true light, without losing anything of its sensory richness.
Addendum II. In my writings, “mysticism” is spoken of in different ways. The apparent contradiction which some persons have claimed to find in this is elucidated in the annotations to the new edition of my Erkenntnistheorie der Goetheschen Weltanschauung, The Theory of Knowledge in Goethe's Conception of the World.
Addendum III. In a few words I hint here at the road to the cognition of the spirit which I have described in my later writings, especially in Wie erlangt man Erkenntnisse der höheren Welten, How does one Attain Knowledge of the Higher Worlds, Umriss einer Geheimwissenschaft, Outline of a Secret Science, Von Seelenrätseln, Riddles of the Soul.