The concept of legal authority is essential for the functioning of a legal system.
科学家的责任不仅限于实验室,还包括更广泛的社会。
如果经济学家能够使自己被认为是谦逊的,能干的,与牙医水平相当的人,这是好的。
Leadership means making tough decisions today that will pay off decades from now.