[Mortals] say of some temporal suffering, "No future bliss can make up for it," not knowing Heaven, once attained, will work backwards and turn even that agony into a glory. And of some sinful pleasure they say "Let me have but this and I'll take the consequences": little dreaming how damnation will spread back and back into their past and contaminate the pleasure of the sin. Both processes begin even before death.

The Great Divorce (1944–1945)