Gregory of Nyssa, The Great Catechism, Ch. 40
"Indeed, the sinner's life of torment presents no
to anything that pains the sense here. Even if some
one of the
punishments in that other world be named in terms
well known here, the distinction is still not small.
hear the word fire, you have been taught to think of
a fire other
than the fire we see, owing to something being added
fire which in this there is not; for that
fire is never quenched, whereas
experience has discovered many
ways of quenching this; and there is
a great difference between a fire
which can be extinguished, and
one that does not admit of extinction."