无论大自然为人类准备了什么，无论多么不愉快，人类都必须接受，因为无知从来都不比知识更好。
Whatever Nature has in store for mankind, unpleasant as it may be, men must accept, for ignorance is never better than knowledge.
If you think about something at three o'clock in the morning and then again at noon the next day, you get different answers...
The past is never dead; it is not even past.
A good mathematician is not one who knows all the answers, but one who asks the right questions.
Leadership is about empowering others to achieve what they thought was impossible.