最优财政政策要求税率随时间平稳变化,仅对政府支出的永久性变化作出反应。
The true teacher defends his pupils against his own personal influence.
我总是等机会错过了才发现我曾有过机会。
自己吃饱了应当想到别人的饥饿,身上穿暖了应当想到别人的寒冷,享受安逸应当想到百姓的劳累。
A writer is someone who pays attention to the world.