Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
数学不是关于数字、方程、计算或算法的：它是关于理解的。
Sometimes the best way to help the poor is to give them cash and let them decide how to spend it.
The greatest leader is not necessarily the one who does the greatest things. He is the one that gets the people to do the greatest things.
"The only thing we can be sure of about the future is that it will be different."
在我们这个行业，安全不是优先事项 - 优先事项可以改变；安全必须是一种价值观。
