The doors of Hell are locked on the inside. I do not mean that the ghosts may not wish to come out of Hell, in the vague fashion wherein an envious man “wishes” to be happy: but they certainly do not will even the first preliminary stages of that self-abandonment through which alone the soul can reach any good. They enjoy forever the horrible freedom they have demanded, and are therefore self-enslaved: just as the blessed, forever submitting to obedience, become through all eternity more and more free.

C. S. Lewis (1898-1963) English writer, literary scholar, lay theologian [Clive Staples Lewis]

The Problem of Pain (1940)