From Zhao Yi's (
赵翼, Qing dynasty)
《论诗五首》 (second poem):
李杜诗篇万口传,
至今已觉不新鲜。
江山代有才人出,
各领风骚数百年 - 'The poems of Li and Du are on ten thousand mouths; by now we feel they are no longer fresh. Age after age the rivers and mountains send forth talents, each leading the literary scene for several hundred years.' A famously sharp Qing reassessment of the Tang canon.