最优雅的数学证明是那些以简单揭示真理的证明。

When it's gone, you'll know what a gift love was. You'll suffer like this. So go back and fight to keep it.

The only way to do great work is to love what you do.

化学工业是现代文明的支柱，我们必须以应有的责任感对待它。

人生没有重来，所以要好好珍惜。