数据不是信息，信息不是知识，知识不是理解，理解不是智慧。

一句话，先是太胆小，明知错的事却不敢不做；后来也还是太胆小，明知对的事却不敢去做。

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

In mathematics, the simplest questions often lead to the deepest insights.

创新不是来自于更多的资源，而是来自于更好的资源利用。