《旧唐书·列传·卷七十五》
他的文章练达、条理分明又有创新，往往到了极高的境界，当时写文章的人，都佩服他的文章简练高雅，并又立意明晰雄浑。
其练理创端往往诣极，当时作者，咸伏其简拔，而趣尚辨博。
His essays were skillful, clear, novel, and often reached the sublime realm; the writers of his time admired his essays for their conciseness and elegance, and their clarity and grandeur of purpose.