The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

I want to liberate America from fear. I want people to feel free to express themselves.

我们写的每一个字都是朝着理解自己和周围世界迈出的一步。

The PAC learning framework provides a formal way to analyze the efficiency and effectiveness of learning algorithms.

未来就是永恒再加一天。