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。
你最不满意的客户是你最好的学习资源。
The more you learn, the more you know, the more you know, the more you forget. The more you forget, the less you know. So why bother to learn?