《资治通鉴·唐纪·唐纪七十八》
废黜昏君，拥立明主，自古就这样做，为了国家大计，这样做不是叛逆。 
废昏立明，自古有之，为社稷大计，非不顺也。 
Deposing the incompetent ruler and supporting the honest one is what have been done since ancient times. For the sake of the country's major plans, it is not rebellion to do so.