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.
买水管、延长线或梯子时，买比你认为需要的长得多的。才会是正确的尺寸。
这是数着别人契上的齿数，而以为自己很富有。
The key to efficient computation is not just speed, but elegance.
A person needs to walk how many roads to become a real person.
“科学的美丽在于它让我们以一种既深刻又实用的方式理解世界。”