There's a tendency to think that our present politicians are much worse than we had in the past.But we tend to forget how awful our politicians were in the past.

The only thing to do with good advice is to pass it on. It is never of any use to oneself.

The big money is not in the buying and selling, but in the waiting.

当你解决一个数学问题时，你不仅得到了答案，还理解了为什么这是答案。

"The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

我们无法选择时代，但我们可以选择如何回应它。