Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
数学不是关于数字、方程、计算或算法：它是关于理解的。
Every chemical process tells a story - our job is to make sure it's a story worth telling.
The world is not a wish-granting factory.
I want to stand as close to the edge as I can without going over. Out on the edge you see all kinds of things you can't see from the center.