《文心雕龙·通变》
司马相如的《上林赋》说： 看不到头，望不见边；太阳从东边的水中出来，月亮从西边的山上升起。 
相如《上林》云∶ 视之无端，察之无涯，日出东沼，入乎西陂。 
Sima Xiangru's "On the Upper Forest" says: I can't see its head and can't see its edge; the sun rises from the water in the east, the moon rises from the mountains in the west.