The only limits are the ones you set for yourself.

Sustainability isn't just an option; it's our responsibility to future generations.

I don't mind being a role model. I embrace it. I just hope I'm a good one.

一个东西丢了，95%的情况，它都在你最后一次见到它的地方一臂可及的范围内。在这个半径内所有可能的位置进行搜索，你就会找到它。

预见数学未来的真正方法是研究它的历史和现状。

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.

逆流而上。走另一条路。忽略传统智慧。