The principal effect of the progress of society is to increase the quantity of wealth, and the power of distributing it.

"I’m a very calm person. That helps me in tennis and in life."

艺术是自由的，它不应该被任何框架束缚。

It is the duty of a student to get everything out of a teacher， and the duty of a teacher to get everything out of a student.

Business is about making money, not friends.

心灵是将挑战转化为机会的系统。