I don't see myself as a great discoverer of artists, like Charles Saatchi.

What artists think about the world is often different from how we businessmen see it, and I find that an enriching experience.

The inability to delegate is one of the biggest problems I see with managers at all levels.

You can have great teachers, but if you don't have a good principal, you won't have a good school.

I have always believed that every great city in history needs a vibrant center.

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.