4518. At length they proceeded so far as to invent arts of binding themselves even to the spontaneous things of ideas; for every idea has also a spontaneous [element], which man is not aware of, so that there is both a voluntary and a spontaneous in the ideas of the memory or thought. This they discover by means of their operating in the right time, and feigning themselves to adhere to the locks of hair which are upon the occiput under the cerebellum. In the night time they know that man is in his spontaneous principles, and the cerebellum is that from which the spontaneous flows, and thus that the locks of hair which are there are such things as adhere, whence there is a combing the hair in hell: hairs are the external natural. I was thus bound to a most profane subject, and being then in a state almost [entirely] different, I was less able than before to think as of myself, my ideas being led more forcibly and against my will.