数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。
幸福，就像不幸一样，是一个主动的选择。
Old soldiers never die. They just fade away.
最终，我们都是故事。重要的是我们如何讲述它们。
Sometimes the most important experiments are the ones that fail, because they teach us what doesn't work.