可持续性不是一种选择，而是我们海洋和地球生存的必要条件。
那些疯狂到认为自己可以改变世界的人，才是那些真正改变世界的人。
To teach how to live without certainty and yet without being paralyzed by hesitation is perhaps the chief thing that philosophy， in our age， can do for those who study it.
电磁场的方程是从实验事实中推导出来的。
We are like travelers who have lost their way； we must ask， each one， for directions from a passerby.
Happy the man, and happy he alone, he who can call today his own.