The noblest pleasure is the joy of understanding.

As you grow older, you will discover that you have two hands, one for helping yourself, the other for helping others.

不屈服于非理性的思想，并不能因此免受统治的共谋。

The discovery of topological insulators has opened up a new frontier in condensed matter physics, where the interplay of symmetry and topology leads to novel quantum states of matter.

过去是一个谜，历史学家是试图将碎片拼凑在一起的人。

别害怕重新开始。