有用是这些老人曾经对自己最好的希望，而无目的是他们最深的恐惧。

语言不仅仅是交流的工具；它是通往灵魂的桥梁。

一个人肚子空空，心事重重，总是睡不好觉的。

The mother-child relationship is paradoxical and, in a sense, tragic. It requires the most intense love on the mother's side, yet this very love must help the child grow away from the mother, and to become fully independent.

量子力学的本质在于它不描述单个粒子的行为，而是描述它们行为的概率。