Do spirits need to sleep or rest?

Dying does not refine, nor rarify to the utmost. Our sensibilities are keener, but in constant association with the unlike, as near as I can make it understood to mortals. We stand, we walk, ofttimes rest, as when on earth by a recumbent position. But we do not need rest of this kind. When our forces grow weak, we draw on other forces, for there is no dynamo within the spirit out of the body.