网球是一项心理游戏。每个人都很健康，每个人都能打出漂亮的正手和反手。
人一定要懂得“礼”之后才能产生恭敬之心，产生恭敬之心以后才能有所尊敬，有所礼让。
You must be the change you wish to see in the world.
No man, for any considerable period, can wear one face to himself and another to the multitude, without finally getting bewildered as to which may be the true.
我不认为有什么极限。
Some men can get results if kindly encouraged， but give me the kind that do things in spite of hell.
有些人如果好好鼓励，做得出一番事业；但是，还是做那种不论险阻艰辛都要干下去的汉子吧。
最好的肥料？是农民田间的足迹。
Science is a journey, not a destination.
成功不是终点，失败也不是致命的：重要的是继续前进的勇气。