数学思想的美丽之处在于它可以跨越文化和时间被分享和理解。
Leadership means making tough decisions today for a better tomorrow.
写作是在一个世界中创造另一个世界。
There is no such thing as a quality problem. There are only problems of people not doing what they are supposed to do.
我不是孩子，我是成人。