Dostoevsky inverts our usual picture of damnation—hell becomes not punishment *imposed* from without, but a condition we *inflict on ourselves* through emotional paralysis. Most people assume hell means suffering *in* isolation, but he's suggesting something subtler: that the real torment is the incapacity itself, the atrophied heart that cannot reach toward another person. Watch someone nursing a grudge for years, justifying their coldness as prudence or principle, and you'll see what he means—they're not being punished so much as they're rotting from the inside out. The insight cuts because it places the keys to our own cage squarely in our own hands.