Unity is not about uniformity; it's about finding common purpose amid diversity.
数学家的工作是在别人看到混乱的地方发现模式。
年轻人是可怕的,因为怎么能知道他的将来不如我们现在呢?但如果一个人到了四十、五十岁还默默无闻,他也就没有什么可怕的了。
Happiness comes from within, not from material things.
We must keep learning to keep up with the times.