The best way to learn something is to teach it.

一瞬间，过去的一切都离你而去，剩下的只有回忆。

Every exhibition should be a question, not an answer.

The Langlands program is a vision of how mathematics could be seen as a single, coherent whole.

Ignorance more frequently begets confidence than does knowledge.

——同盟会

我们都是时间的移民。