世界的历史是用山脉的语言书写的。

The truth is, you can't outrun your past. No matter how fast you go, it's always right there behind you.

The PAC learning framework provides a formal way to quantify the learnability of a concept class.

问题的解决不是机械地应用过去的经验，而是通过重构情境来实现。

开始总是在今天。