Lecture XXI

When we try to think meditatively into a crystal, for example into an octagonal crystal, allowing it to enter deeply into our soul, adapting ourselves inwardly to its form, perhaps allowing its form to work upon us for an hour, and then succeed in suggesting it away, then one reaches the Arupa plane ... [Gap in text ...] Thus when we let some kind of crystal, for instance a rock crystal, work upon us, retaining its forms in the disposition of our soul and finally allowing them to disappear, then one is on the Arupa plane. In this way we actually experience that the forces which build up the crystal are on the Arupa plane.