We must think beyond our own lifetimes when it comes to energy.
Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.
If you want to understand function, study structure.
促成人类建立爱心的动力是本能，也是生命创造力的原动力。
The art of progress is to preserve order amid change and to preserve change amid order.
The actions of men are the best interpreters of their thoughts.