纠缠不仅仅是量子理论的一个奇特特征，它是量子力学的标志性特征。

The bitterest creature under heaven is the wife who discovers that her husband's bravery is only bravado.

Quality should never be compromised for the sake of short-term profits.

写作需要一颗心。没有激情，我什么都不是。