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.
复杂容易，简单难。
我们致力于在继续提供世界所需能源的同时减少碳足迹。
Three things you need: The ability to not give up something till it works， the ability to give up something that does not work， and the trust in other people to help you distinguish between the two.
Train employees well enough they could get another job， but treat them well enough so they never want to.