If a game is played, it must be possible to lose it. If the happiness of a creature lies in self-surrender, no one can make that surrender but himself (though many can help him to make it) and he may refuse. I would pay any price to be able to say truthfully “All will be saved.” But my reason retorts, “Without their will, or with it?” If I say “Without their will” I at once perceive a contra- diction; how can the supreme voluntary act of self-surrender be involuntary? If I say “With their will,” my reason replies “How if they will not give in?”. . .
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.
From The Problem of Pain - C.S. Lewis
Compiled in Words to Live By
