及时采撷你的花蕾，旧时光一去不回，今天尚在微笑的花朵，明日便在风中枯萎。

Every thought serves some biological purpose.

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’m a feminist and I’m proud of it.

数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。