《容斋随笔·卷七·李习之论文》
由此可见，有的文章虽然道理讲得很深，说理亦恰当，但是语言文字不好，不能成为好文章，亦不能传之于世。 
故义虽深，理虽当，词不工者不成文，宜不能传也。 
This shows that some articles, even if their explanations are very profound, are not well written, and cannot become good articles or be passed down through generations.