Your most unhappy customers are your greatest source of learning.
It's fine to celebrate success but it is more important to heed the lessons of failure.
As we look ahead into the next century, leaders will be those who empower others.
A top-quartile teacher will increase the performance of their class - based on test scores - by over 10 percent in a single year. ... That means that if the entire U.S., for two years, had top-quartile teachers, the entire difference between us and Asia would go away.
I want to admit that I am an optimist. Any tough problem, I think it can be solved.
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