2. Imagination
Now first of all, viewed entirely outwardly, the whole imaginative world consists of such hallucinations, visions, and illusions. It has been pointed out [in Knowledge of the Higher Worlds] how, through occult training, such visions, etc., are artificially produced. By focusing the consciousness on a seed or a dying plant, certain forms, which to begin with are nothing but hallucinations, are conjured up before the soul. The “flame formation,” spoken of as appearing in the soul through observation of a plant or the like, and that after a time completely separates itself from the plant, is, outwardly viewed, to be regarded on the same level as an hallucination. It is the same in occult training when the imaginative world is entered. What was customarily regarded as going forth from things “outside in space,” or “clinging to them” as properties—colours, sounds, odors, etc.,—now float free in space. Perceptions break loose from all outer things and swim free in space, or fly around in it. Yet it is known with strict accuracy that the things before us have not brought forth these perceptions, but rather that they are self-induced by the human being. So it is that one thinks one has “lost the ground under one's feet.” In ordinary life in the physical world those inner picturings that do not proceed from things must be guarded against and are without ground or foundation. But to call forth imaginative knowledge, the prime essential is to have colours, sounds, odours, etc., fully torn loose from all things, “floating free in space.”