Lucifer and Ahriman are at their most harmful when they are not seen, when they remain invisible. Let us suppose that somebody is tormented by ahrimanic forces; what would be the best remedy? The best remedy would be for him to have some kind of picture made of Ahriman which he could place in his room. The best remedy against an astral being which torments one, is to place it before oneself in a physical form.
It is incorrect to suppose that if we have Ahriman before us we will be persecuted by him; the contrary is true. Things must be made visible. But we must not let the matter get on our nerves; we must not develop a condition in which, if we happen to pass by the picture of Ahriman and look at it unconsciously, we then carry the image within ourselves. For this image will then be invisible inside us, thus making us nervous or excited.
Source: Rudolf Steiner – GA 275 – Art as Seen in the Light of Mystery Wisdom: Lecture Three: IMPULSES OF TRANSFORMATION FOR MAN’S ARTISTIC EVOLUTION II – Dornach, 30th December 1914
Translated by Pauline Wehrle