I used to think the world was broken down by tribes. Then I thought it was broken down by rich and poor. Then I thought it was broken down by stupid and smart. But I know now that it is broken down by people who are alive and people who are dead.

The language of mathematics is the language of the universe, and by learning it, we can understand the cosmos.

教育是减少不平等的最有力工具之一。

我写作是为了寻找希望。