Eternity, you know, is a room as small as a bathhouse… and rather stuffy.
He turns metaphysics into a claustrophobic joke, reducing the infinite to a stale room. The grotesque image shows his spiritual nausea: eternity as boredom. It’s funny until it isn’t; nihilism always sounds clever for a minute. The line shows why he can’t live within moral limits—everything large has been shrunk to airless cynicism. In contrast with Sonia’s Lazarus hope, this is the anti-gospel. The joke lands like a shiver.