Lecture II

We may therefore say that the soul in becoming clairvoyant must be able to move in the spiritual world according to its laws, and it must ever and again be able to step back over the threshold into the physical sense world, behaving here—to put it in plain terms—correctly and sensibly. Since the faculties of the soul for the spiritual world must be and are different from those the soul employs for the physical senses and the rest of the physical body, the soul has definitely to acquire mobility, if it wants to become clairvoyant. Then it can perceive and take in the spiritual world with the necessary faculties for it, returning across the border and now experiencing the sense world with what is necessary here. The gaining of this adaptability, the capacity of transformation, is never easy. If we are to estimate correctly, however, the differences between the spiritual and physical sense world, we must keep clearly within our mind's eye precisely this border region between the two worlds and the threshold itself over which the soul must pass when it wants to leave one world and enter the other. We shall see in the course of these lectures how injurious it can be for the soul in many different ways to carry the habits of one world into the other, when—in one or the other direction—the threshold has to be crossed.