You cannot teach a man anything, you can only help him to find it for himself.
The world is full of people whose notion of a satisfactory future is, in fact, a return to the idealised past.
The biggest regret in life is giving up what should not be given up easily, and stubbornly persisting in what should not be persisted.
计算机科学对社会的影响是深远而广泛的。
The world is a book, and those who do not travel read only a page.