数学不是关于数字、方程、计算或算法的：它是关于理解的。
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
采矿效率不仅仅是速度；而是用更少的浪费做更多的事。
诗歌不是一个封闭的领域，而是一个开放的领域。
Every quarry has two stories: the rock formation beneath and the community around it. Wise leaders listen to both.
当你处于困境时，记住你为什么要开始。