I think we want to see new voices and new ideas emerge - that's part of the reason why term limits are a really useful thing.

The worst thing that colonialism did was to cloud our view of our past.

Someday, our children, and our children’s children, will look at us in the eye and they'll ask us, did we do all that we could when we had the chance to deal with this problem and leave them a cleaner, safer, more stable world?

You know, there are certain things that make for good sound bites but don't always translate into good policy.

If [black] nationalism could create a strong and effective insularity, deliver on its promise of self-respect, then the hurt it might cause well-meaning whites, or the inner turmoil it caused people like me, would be of little consequence.

I believe that we have better ideas. But I also believe that good ideas don't matter if people don't hear them.

What we can be scientifically certain of is that our continued use of fossil fuels is pushing us to a point of no return