解释：上等的医生能够医治国家，次一等的只会医治病人，这本来就是医生的职守。
一个人想欺骗人类，首先必须化腐朽为神奇。
The monument is a fixed point in the changing city.
Never underestimate the power of teamwork in achieving what seems impossible.
The most powerful statements are often the quietest.