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一個人的心是只服從他自己的，你想束縛它，結果卻釋放了它；如果讓它自由自在的話，你反而把它束縛得緊緊的了。

The true value of a forest cannot be measured in board feet alone.

The stranger is close to us, insofar as we feel between him and ourselves common features of a national, social, occupational, or generally human, nature. He is far from us, insofar as these common features extend beyond him or us, and connect us only because they connect a great many people.

Topological insulators are a prime example of how theoretical predictions can lead to experimental discoveries that reshape our understanding of the physical world.

過去是一個異國他鄉(xiāng)；那里的人們做事方式不同。

人生是一系列的選擇，而最難的那些才是最重要的。