Lecture IV
Now it is extremely important to know that in view of the evolution of our Earth and all the forces that have played their part in that evolution—which you will find described in the book Occult Science—an Outline,—it was ordained that man should not participate in this more lively activity of the lower aura during sleep, that is to say he was not to witness this activity. The reason for this was that the revitalising forces needed by man for the restoration of what has been used up during the waking hours, are kindled by the lower Ego-aura and lower astral aura. The vitalising forces must be drawn from these parts of the aura. That they work upwards and revitalise the whole man depends upon the upper aura developing powers of attraction drawn from the world of stars; it can therefore attract the forces which rising from below, act restoratively. That is the objective process.