居官则忧其民,居家则忧其亲,处事则忧其身。
【释义】做官要关心百姓,居家要照顾家人,做事要顾及自身。
宰相必须从地方官员中选拔,猛将必须从士兵中产生
The scientific study of behavior must be based on objective, measurable data.