在某种程度上，我们都是自己时代的囚徒。

Don't worry about what anybody else is going to do. The best way to predict the future is to invent it.

The writer is a person who writes, not a person who is written about.

Sustainable quarrying isn't an option; it's our obligation to future generations.

PAC学习框架提供了一种正式的方法来分析学习算法的效率和有效性。

写作是重新找回过去的一种方式。