When buying a garden hose， an extension cord， or a ladder， get one substantially longer than you think you need. It’ll be the right size.

Writing is learning to die, learning to give everything away.

I can’t play bridge. I don’t play tennis. All those things that people learn, and I admire, there hasn’t seemed time for. But what there is time for is looking out the window.

量子力学的美在于它能够揭示看似不相关现象之间的隐藏联系。

创新的关键不仅在于解决问题，还在于识别哪些问题值得解决。

I think a lot about labor and time.