The only limits that exist are the ones you place on yourself.

永远不要停止质疑如何改进事物。

You have to think anyway, so why not think big?

People are always blaming their circumstances for what they are. I don't believe in circumstances. The people who get on in this world are the people who get up and look for the circumstances they want, and, if they can't find them, make them.

It may be unfair, but what happens in a single day can change the course of a whole lifetime.

最大的风险是不冒任何风险。