数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。

我们必须在经济增长和环境管理之间取得平衡。

The best performance improvement is the transition from the nonworking state to the working state.

The way in which a man accepts his fate and all the suffering it entails... adds a deeper meaning to his life.

历史不是发生了什么，而是我们记住了什么以及如何记住它。