世界是一个舞台，我们都是演员。

You can’t be brave if you’ve only had wonderful things happen to you.

研究古DNA就是与逝者对话。

The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it.

钢铁的未来在于可持续性和创新。

我们学得越多，就越发现自己的无知。