What should we think of someone who never admits error, never entertains doubt but adheres unflinchingly to the same ideas all his life, regardless of new evidence? Doubt and skepticism are signs of rationality. When we are too certain of our opinions, we run the risk of ignoring any evidence that conflicts with our views. It is doubt that shows we are still thinking, still willing to reexamine hardened beliefs when confronted with new facts and new evidence.

There is something fundamentally antidemocratic about relinquishing control of the public education policy agenda to private foundations run by society's wealthiest people; when the wealthiest of these foundations are joined in common purpose, they represent an unusually powerful force that is beyond the reach of democratic institutions.

When you succeed at keeping almost everyone in school, you must figure out ways to educate everyone you keep in school.

The foundations demand that public schools and teachers be held accountable for performance, but they themselves are accountable to no one. If their plans fail, no sanctions are levied against them. They are bastions of unaccountability.

In DC, policymakers think that if we can only have high enough standards, tough enough tests, and hold people accountable, we can close the achievement gap. And it hasn't happened. Yet the new law, the Every Student Succeeds Act, is based on the same test-based and market-driven framework and ideology, except it lets the states do it.

We will continue to chase rainbows unless we recognize that they are rainbows and there is no pot of gold at the end of them

Without knowledge and understanding, one tends to become a passive spectator rather than an active participant in the great decisions of our time.