《左传·闵公·闵公二年》
而且做儿子的应该害怕不孝，不应该害怕不能立为嗣君。修养自己而不要去责备别人，就可以免于祸难。 
且子惧不孝，无惧弗得立，修己而不责人，则免于难。 
Moreover, as a son, one should fear being unfilial, not fear not being made the heir. Cultivating oneself and not blaming others can avoid disaster.