You don't write because you want to say something, you write because you have something to say.

在一个不断变化的世界中，唯一可持续的优势是比竞争对手学习得更快的能力。

我不后悔我做的任何事情。

The key to a happy life is not in avoiding problems, but in learning how to deal with them effectively.

集合是一个允许自己被看作一的多个。