The doorstep to the temple of wisdom is a knowledge of our own ignorance.

But you say does it represent change? The change is that we are fighting an insurance industry that has killed health reform for generations. They're spending tens of millions of dollars right now to defeat this bill and we're on the doorstep of winning a great victory for the American people.

If there are more and more environmental refugees they are going to end up on your doorstep too.

The artist's world is limitless. It can be found anywhere far from where he lives or a few feet away. It is always on his doorstep.

Should we find a second form of life right here on our doorstep we could be confident that life is a truly cosmic phenomenon. If so there may well be sentient beings somewhere in the galaxy wondering as do we if they are not alone in the universe.