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

A lot of executives act like their time is worth more than anyone else's. But I always respect an employee who guards his or her time, even from me.

The best move you can make in negotiation is to think of an incentive the other person hasn't even thought of - and then meet it.

Collecting is more than just buying objects.

How absurd that our students tuck their cell phones, BlackBerrys, iPads, and iPods into their backpacks when they enter a classroom and pull out a tattered textbook.

Public education is the key civil rights issue of the 21st century. Our nation's knowledge-based economy demands that we provide young people from all backgrounds and circumstances with the education and skills necessary to become knowledge workers. If we don't, we run the risk of creating an even larger gap between the middle class and the poor. This gap threatens our democracy, our society and the economic future of America.

If people want to criticize me because it sells papers, that's fine. I just don't like it when it's inaccurate.