I'm not where I want to be, but I'm not where I used to be.

The best way to learn mathematics is to do mathematics.

迄今为止发现的让许多人自愿合作的唯一方式是通过自由市场。

可持续性不是一种选择，而是一种责任。

Let me explain. I think it would be very unusual for anyone here, or anyone watching, to be envious of the Queen of England. Even though she is much richer than any of you are, and she's got a very large house, the reason why we don't envy her is because she's too weird.

建立成功企业的关键是为客户创造价值。