As important as it is to change the light bulbs, its more important to change the laws

When you're going through an emotional experience and you're focussed completely on what's happening, you can't even spare any attention that the camera's there.

The Internet empowers individuals to play a more active role in the political process, as Obama's campaign has manifested.

I will tell you that what gives me a sense of joy is having work to do that justifies pouring every ounce of energy I have into it. That's really a blessing to have in your life. And it gives you energy back when you have the privilege of doing work that makes you feel that way.

The struggle to save the global environment is in one way much more difficult than the struggle to vanquish Hitler, for this time the war is with ourselves. We are the enemy, just as we have only ourselves as allies.

The answer is to end our reliance on carbon-based fuels... If we succeed, we create booming new industries, wealth, clean secure energy and maybe we prevent the greatest disaster so far in human history, saving millions of lives while improving billions more. If we fail, basically it's business as usual while things slowly get worse all around us.

The task of saving the earth's environment must and will become the central organizing principle of the post-Cold War world.