The world is a tragedy to those who feel, but a comedy to those who think.
实现明天理想的唯一障碍是今天的疑虑。
To remain quiet is to resolve the mind in the self.
A theory should not attempt to explain all the facts, because some of the facts are wrong.
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.
