中心地的规模和分布遵循一定的规律。

The only way to learn mathematics is to do mathematics.

总是为最坏的情况做计划，同时期待最好的结果。

领导力是指让他人因为你的存在而变得更好，并确保这种影响在你离开后依然持续。

The most powerful tool in business is a simple idea executed well.

I start early and I stay late, day after day, year after year. It took me 17 years and 114 days to become an overnight success.

数学中真正的挑战不是解决问题，而是提出正确的问题。

可持续性不是一种趋势，而是我们共同的责任。