《旧唐书·列传·卷一百一十》
 臣生性愚笨无知，人情世故多有不懂，只酷爱做学问写文章，没有一天停止过，确实得到同辈人推崇赞许。
臣受性愚陋，人事多所不通，唯酷好学问文章，未尝一日暂废，实为时辈推许。
I am naturally stupid and ignorant and do not understand the ways of the world. I am only obsessed with learning, writing and never stop, which indeed are highly praised and admired by my peers.