The world owes all its onward impulses to men ill at ease; the happy man inevitably confines himself within ancient limits.
世界所有的前进动力都归功于不安分的人;幸福的人不可避免地把自己限制在古老的界限内。
A mathematician's work is never truly finished; there is always more to explore.
Nowadays people know the price of everything and the value of nothing.
我们今天种植的每一棵树都是对更绿色、更健康的未来的投资。
The only way to do great work is to love what you do.