The biggest barrier we've seen to student progress is this: School policies and practices often prevent good teachers from doing great work and even dissuade some talented Americans from entering the profession. This needs to change.

For businesses to be successful, they need to constantly ask the question: how can we provide value to our customers? At the end of the day, that is what matters.

You always learn lessons in business.

There is no substitute for knowledge. To this day, I read three newspapers a day. It is impossible to read a paper without being exposed to ideas. And ideas - more than money - are the real currency for success.

I never stay anywhere — parties , museums, meetings — longer than 3 hours.

People always say congratulations. When you're a successful bidder it means you're willing to spend more money than anyone else. I'm not sure if that's congratulations or condolences.

Every artist is unreasonable, because he or she is doing something that hasn't been done before.