Of God and His Creatures

The spirit may be 'constricted,' or tied, to some material substance, and that material substance be kept in violent agitation, such that, for every vibration or other agitation of the substance, there shall be a corresponding pang of the constricted spirit. -- I need scarcely add that this notion of 'constriction' is not of faith, but is a theory devised to explain what is of faith, namely, that everlasting fire was prepared for the devil and his angels (Matt. xxv, 41), and somehow torments those spirits.

Of God and His Creatures: 4.90