In theory, there is no difference between theory and practice. But, in practice, there is.

I think the most important thing in life is to be happy.

学校应当是一个组织儿童集体生活的地方，以促进他们的全面发展。

The best way to predict the future is to create it.

I don't focus on what I'm up against. I focus on my goals and I try to ignore the rest.

I can never be safe; I always try and go against the grain. As soon as I accomplish one thing, I just set a higher goal. That's how I've gotten to where I am.

Success is going from failure to failure without losing enthusiasm.