Boundaries define us. They define what is me and what is not me. A boundary shows me where I end and someone else begins, leading me to a sense of ownership.

"Home is not where you are from, it is where you belong."

"Writing is the only thing that, when I do it, I don't feel I should be doing something else."

The boundary between physics and mathematics is not as clear-cut as one might think.

冒着显得荒谬的风险，让我说，真正的革命者是被伟大的爱所引导的。

适应是进化的关键。