过去不是负担,而是建立的基础。
The past is not a burden, but a foundation upon which to build.
自守表示的研究是数学抽象之美的反映。
变化是唯一不变的,而适应能力是蓬勃发展的关键。
It is better to be a human being dissatisfied than a pig satisfied; better to be Socrates dissatisfied than a fool satisfied.