“That is what mortals misunderstand. They say of some temporal suffering, ‘No future bliss can make up for it,’ not knowing that heaven, once attained, will work backwards and turn even that agony into a glory. [Others take pleasure in sin], little dreaming how damnation will spread back and back into their past and contaminate the pleasure of the sins….
“What happens to [the saved] is best described as the opposite of a mirage. What seemed, when they entered it, to be a vale of misery turns out, when they look back, to have been a well; and where present experience saw only salt deserts memory truthfully records that the pools were full of water.”
C.S. Lewis The Great Divorce. pp. 67-68