Lecture XX (Recapitulation of Lesson I)

Oh, every night while sleeping the human being with his I and with his astral body is in that world that with imaginative gaze now appears as black, night-cloaked darkness; but he doesn't realize it—his soul-senses have not opened. He doesn't realize that he lives and acts among spiritual beings and spiritual facts between falling asleep and awakening; were he to consciously experience without further preparation what there is to experience there: he would be crushed! The Guardian of the Threshold protects us—therefore he is the Guardian of the Threshold—protects us against crossing the abyss unprepared. We must follow his admonitions if we wish to tread the esoteric path. He encloses the human being in darkness every night. He guards the threshold so that the human being does not, when falling asleep, enter into the spiritual-occult world unprepared.