I, with two witnesses to back me, will relate what I myself experienced when a boy at school. One night, we were four of us sleeping in one bed; my companion rose from beside me, as asleep as ever he was, the moon in its fifteenth night shining in upon us, and wandered all over the house as though he were awake, with his eyes shut. He climbed the walls more nimbly than a squirrel. He a second and a third time clambered up on the bed, and trampled upon all of us with his feet; but we felt no more of his weight than if he had been a little mouse. Wherever his sleeping body came, at once all the fastenings of the doors fell back of their own accord. With exceeding swiftness, he got to the top of the house, and, sparrow-fashion, clave to the roof. I am telling what I saw, not what I heard in idle talk. This would seem to be the part, not of a body, but of a spirit which freely uses its native power, so to speak, when the corporal senses are bound, and it wanders outside the mansion of the body.... We do not suppose that this will appear wonderful to the wise, who have a true conception of the power and nobility of the human mind, which in some respects is accounted the equal of the angels, being only separated from them by the interposition of the body." After speaking of the miracles wrought, first by the invocation of faith, second by sanctity, which commands the ministration of angels, third by the assistance of demons through explicit or implicit compact, he continues: "Some persons add to these three ways a fourth, saying that the mind or spirit of the man himself can naturally work its miracles, provided only it knows how to withdraw itself from the accidental, in upon itself, above the exercise of the senses, into unity. Those who can compass this undertake to work marvels, to predict the future, to lay open the secrets of men's hearts, to dispel diseases, and suddenly to change men's counsels." Trithemius is willing to admit that some such power exists, whilst denying that it can attain to any perfect exercise without some external assistance from good or evil spirits. He gives the same account with Görres of the ecstatic _volatus_, viz., that the power of God co-operates with the energy of the saint's soul.