The Elementary Kingdoms
We can understand such things in the best way, if we proceed from what we can perceive through our senses—from the kingdom of the sense-world, which are accessible to human observation. Here, in the physical sense-world, four kingdoms are spread out before our senses: the mineral kingdom, the vegetable kingdom, the animal kingdom, and the kingdom of man. This is common knowledge. Let us now try to form some clear idea as to the precise nature of these four kingdoms; for this is by no means clear to the average person. And for this same reason, it is also not so easy to gain an insight into the first, second and third elementary kingdoms. It is precisely when we speak of such difficult matters, that we must take great care, from the very outset, to realize that no true goal can be reached, if we believe that a concept which we have, as it were, driven like a stake into the ground, can then be left rooted in this place. This may still be possible within the physical sense-world, for here, things stand one beside another; there is a division between them, just as this book, this piece of chalk, a rose, etc., are distinct and separate from one another. It is possible, in this case, to apply a thought to a single object, for when we have named something, we can be sure that we have before us something distinct and limited. If, however, we send to the astral plane, that world which is immediately beyond our own, and permeates it, as the one nearest to it, we find that this no longer holds true, for, in the astral world, there is eternal movement. If you observe the astral body of man, which floats around him as his aura and is the expression of his passions, etc., you will see that this astral body of man is in a continual movement—it is an ebb and flow, a rise and fall of colors and forms, which change at every moment, for new colors shine forth and others disappear, at every moment. This is what we find in the case of man. But there are other Beings which whirl about on the astral plane. Their astral bodies do not form part of the physical body, although—at the same time—they are nonetheless changeable, for at every moment they have a different shape, color, or luminous force. Everything on the astral plane is the continual manifestation of the inner nature of these Beings. We would, indeed, find ourselves in a difficult position if we were to apply to the astral plane the rigid, unchangeable thoughts of the physical world. We must learn instead to adapt ourselves to the mobility of these shapes—we must acquire mobile thoughts. We should be able to use a concept, once in this way, and once in that.