《梦天》是唐代诗人李贺创作的一首七古。此诗写梦游月宫的情景，前四句写在月宫之所见；后四句写在月宫看人世的感觉。诗人的用意，主要不在于对月宫仙境的神往，而在于从非现实的世界冷眼反观现世，从而揭示人生短暂，世事无常的道理。全诗想象丰富，构思奇妙，用比新颖，体现了李贺诗歌变换怪谲的艺术特色。俯视人间，时间短促，空间渺小，寄寓了诗人对人世沧桑的深沉感喟。

《梦天》 李贺

老兔寒蟾泣天色，云楼半开壁斜白。
玉轮轧露湿团光，鸾珮相逢桂香陌。
黄尘清水三山下，更变千年如走马。
遥望齐州九点烟，一泓海水杯中泻。

Dreaming of Heaven
Li He

Old rabbit and chilly toad crying over the color of the sky,
A tower of clouds opens ajar, its slanting wall glowing white.
The Wheel of Jade rolls over heavy dew and moistens the halo round,
Phoenix-pendant goddesses encountered on osmanthus-scented path.
Yellow dust and clear water beneath the three fairy mounts,
The sea change of a thousand years as fleeting as a galloping horse.
Qizhou from this far just nine points of smoke,
Flanked by bodies of sea waters the size of a spill from a cu.