自由就是没有选择。

最终，我们记住的不是敌人的话语，而是朋友的沉默。

When he looked into her dark eyes, and saw that her lips were poised between a laugh and silence, he learned the most important part of the language that all the world spoke—the language that everyone on earth was capable of understanding in their heart. It was love.

在变革时期，适应和保持敏捷的能力是区分赢家和输家的关键。

你越深入数学，就越意识到还有多少未知。