Note 9 — Front matter (continued 2)
Max Gysi translation
The fact here mentioned, in its bearing on the contemplation of crystals, is in many ways distorted by those who have only heard of it in an outward (exoteric) manner, and in this way such practises as crystal-gazing have their origin. Misrepresentations of such a kind are the outcome of misunderstanding. They have been described in many books, but they never form the subject of genuine (esoteric) teaching.