The best way to learn mathematics is to do mathematics.

Suspend judgment， and you alone will be unperturbed.

I'm not going to compare myself to anybody. I'm going to do the best I can do. I'm going to work as hard as I can work. And I'm going to be the best that I can be.

人们算计太多，思考太少 。

I not only came to understand that 'change' was a part of Josie, and that I should be prepared to adapt to it, but I also began to realize that this was not a trait unique to Josie; I came to understand that people often feel the need to present a carefully prepared version of themselves to the outside world - much like arranging a shop window - and once the moment has passed, there's no need to take it too much to heart.

The first step to getting what you want is having the courage to get rid of what you don’t.

在量子力学的领域里，观察者成为实验的一部分，仅仅通过观察的行为就改变了结果。