物理学的语言是数学，但其意义是哲学。

凡是在地方上做官的人，知道自己的职责吗？应该是百姓的仆役，而不是役使百姓的人

"The only thing necessary for the triumph of evil is for good men to do nothing."

Read not to contradict and confute; nor to believe and take for granted; nor to find talk and discourse; but to weigh and consider.

What worries you, masters you.

If knowledge can create problems, it is not through ignorance that we can solve them.

市场经济的本质是自由竞争，而竞争的本质是自由进入。