There is another kind of shroud, too—a piece of cloth, it seems, that is wound around people, so that they appear to themselves to be bound hand, foot, and body, while a desperate desire to unwrap themselves is inspired in them. Since it is wrapped just once around them, they figure it must be easy to undo; but when they start unwinding, the cloth grows longer and longer and the unwinding continues endlessly, until they reach the point of despair.
These are the facts concerning the hells and different forms of punishment. The tortures of hell are not pangs of conscience, as some suppose, because the inhabitants of hell have no conscience and therefore cannot feel the torment of one. People who have had a conscience are among the happy.
from Secrets of Heaven, Volume 2, Sections 964, 965