弦理论的数学美感表明它必须是自然界终极描述的一部分。

我们今天种植的每一棵树都是为我们永远不会见到的后代留下的遗产。

音乐是向心灵诉说美丽诗意事物的神圣方式。

I don't sing because I'm happy; I'm happy because I sing.

We don't just produce steel; we build the backbone of modern civilization.

Life lessons will be presented to you in the order they are needed. Everything you need to master the lesson is within you. Once you have truly learned a lesson， you will be presented with the next one. If you are alive， that means you still have lessons to learn.

我认为人们对家庭的概念非常感兴趣，家庭作为一种战场的概念。