登上黄山之后，天下就没有什么山值得看了，到此为止了

社会大脑假说认为，我们的智力进化是为了管理复杂的社会生活。

Your 20s are the most defining decade of your life.

The best way to learn mathematics is to do mathematics.

在一个不断变化的世界中，唯一可持续的优势是比竞争对手学习得更快的能力。

The world is a place of the living, and the dead have no place in it. The dead are nothing. They are not even a memory. They are forgotten. And the living, too, will be forgotten.

The more you give, the more you receive.

The only way to understand another culture is to assume the frame of reference of that culture.

学问使人适合与自己为伍。