A mystical phenomenon which may develop out of this communion with his "holy ghost" is that of inspired writings. Helpful teachings that will be addressed to humanity in general or to the few seekers in particular may come through his pen. Or guidance in his personal life and instruction in his spiritual life may be addressed to the writer himself through occasional notes. In most cases the words will be impressed spontaneously upon his mind as though telepathically received from the dictation of his unseen but much-felt other self. In some cases, however, his hand and pen may move across the paper by automatic compulsion at a high speed, his mind being forced to move as quickly. He will then distinctly feel that he is merely an instrument which is being used to produce this inspirational script.
-- Notebooks Category 22: Inspiration and the Overself > Chapter 2: Inspiration > # 152