意志不是一种特殊的能力，而是心灵朝向明确目标的整体活动。

"In the middle of difficulty lies opportunity."

We are not in the coffee business serving people, we are in the people business serving coffee.

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。