要理解行为，我们必须从生存和适应的背景中审视其目的。

I'm not a boy, not yet a man.

The laser is to attosecond physics what the telescope was to astronomy.

改变你的思想，你就改变了你的世界。

And I went to talk to them about certain of the great tragedies of Western art. I wanted to see how they would seize the bare bones of certain stories, if they came in as a news item at the news desk on a Saturday afternoon.

心灵的宁静是人生最大的财富。