《资治通鉴·唐纪·唐纪四十八》
我兼有将领与宰相的职任，如果知道朝廷哪里做得对、哪里做得不对，但不肯讲出来，那怎样去做一个人臣呢！ 
晟任兼将相，知朝廷得失不言，何以为臣！ 
“I hold the positions of both military commander and prime minister; if I know what the court is doing right and what it is doing wrong, but I am unwilling to speak out, then how can I act as a subject of the sovereign?”