I think that the thing that makes mathematics worthwhile is the fact that it has this incredible structure that you can explore and discover.
最大的风险是不冒任何风险。在一个快速变化的世界里,唯一注定失败的策略就是不冒险。
网球是一项心理游戏。每个人都健康,每个人都打出很棒的正手和反手——重要的是头脑。