I've learned that you can't have everything and do everything at the same time.
成功人士与其他人唯一的区别就是努力和决心。
自由就是对自己负责。
国际货币体系就像一种语言;如果每个人都使用同一种语言,沟通就会容易得多。
The beauty of mathematics lies in its ability to describe the universe in the most elegant way possible.