Remark
Postscript to Walter Blume: Musical Reflections in the Spirit of Spiritual Science, Berlin
This application of spiritual-scientific knowledge to music is unobjectionable; but a warning must be given against applying the same kind of observation to another art in exactly the same way. In the case of music it is possible precisely because the inner proportions of the I are completely mirrored in the astral as unconscious proportions. In painting, for example, one of the members of the astral body falls out of the mirroring and into the physical body; in sculpture, two members of the etheric body fall out of the physical body and into the extra-bodily reality; in architecture, which is even more complicated, three members of the etheric body fall into the subsensible reality. So it is especially important that such a direct application of the I-constitution to music is possible. But it is precisely this that is particularly characteristic of the 'art of inwardness'.
Dr. Steiner.