解决数学问题的旅程和解决方案本身一样重要，因为它教会我们耐心、坚持和发现的快乐。
有原则的创业文化推动可持续的成功。
"The great advantage of being a writer is that you can spy on people. You're there, listening to every word, but part of you is observing. Everything is useful to a writer, every scrap, even the longest and most boring of luncheon parties."
The secondary rules are those that provide for the creation, alteration, and extinction of primary rules.