《旧唐书·列传·卷一百四十二》
就连纷扰人的内心的事物，往往有意减少尚且不能做到，怎么还能追求非分的东西，来增加自己的精神负担啊！ 
且心目所知见者，每损之尚未能已，岂复攻乎异端，而增其智虑哉！ 
Even when one deliberately tries to eliminate the things that cause internal turmoil, it is often difficult to achieve. So how could one pursue uncertain things, which would only increase their own mental burden?