一个人生前被所有人熟知，但对自己仍然不了解，这是一个悲哀的命运。
It is a sad fate for a man to die too well known to everybody else and still unknown to himself.
Stop being afraid of what could go wrong and think of what could go right.
文学是最具颠覆性的武器，因为它通过说服而非武力改变思想。
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.