Shelley speaks directly to the quiet, peaceful moments that drift into the mind uninvited — those “gentle visitations” that feel like echoes of a happier past. He describes them arriving dressed in trivial or seemingly worthless thoughts, much the way stars get tangled up in clouds on a softly windy night. The comparison is tender and quite precise: we often experience a deep, serene mood only for it to be wrapped in some silly mental chatter, a half-remembered tune or a stray image.
But the simile takes a bittersweet turn. In the night sky, the clouds eventually move on while the stars stay fixed. In the mind, the opposite happens. The trivial thoughts that carried the mood persist, lingering like empty wrappers, while the mood itself — the precious stillness — slips away. That steady, calm feeling is what vanishes. A soft ache of loss hangs over the fragment, leaving us with the sense of holding something lovely that we can’t keep.