成功的关键是专注于目标，而不是障碍。
The key to success is to focus on goals, not obstacles.
I don’t think about the past or the future. I focus on the present.
Every book is a journey, and every journey is a book.
To make oneself an object, to make oneself passive, is a very different thing from being a passive object.
孤独有时是我们为与众不同而付出的代价。
一个命题的证明是一种性质使得我们相信该命题的过程。
经济理论提供工具，但现实世界的测试会完善它们。