Finding mechanisms for putting carbon back into landscapes enhances biodiversity. More biodiverse ecosystems store more carbon, more securely and are more resilient to the impacts of climate change.

Copenhagen has done a remarkable job creating streets that are focused on bicycles and pedestrians.

I think there's a gigantic generation gap in terms of how people understand the Internet and how much they think technology is an important factor in social change.

Optimism is a political act. Those who benefit from the status quo are perfectly happy for us to think nothing is going to get any better. In fact, these days, cynicism is obedience.

Urban retrofitting: creating different sorts of spaces and uses out of places that are already there.

If mass media, social isolation in the suburbs, alienating workplaces and long car commutes create a bunker mentality, the Internet does the opposite.

By looking at climate change as a clean energy generation problem, we're setting ourselves up not to solve it.

It's not just enough to survive. We've got to make something better than what we've got.

The denser places get, the lower the amount of energy people use to get around it.

We have to craft new political realities, not only in places like India, Afghanistan, Kenya, Pakistan, but here at home as well. Another world is possible.

Cabbies in particular seem to like discussing the fate the Earth.

You were the missing piece of my soul, the breath in my lungs, and the blood in my veins.

May the bridges I burn light the way

Etiquette-a fancy word for simple kindness.

Eat to live, not live to eat.

If in your lifetime you watch a species go extinct, or plummet almost to the point of extinction, that is a sign that something really serious is going on.

Legal gun ownership always prevails over the emotionalism of the gun control movement.

I love thee like puddings; if thou wert pie I'd eat thee.

The friendship that can come to an end, never really began.

Managers watch over our numbers, our time and our results. Leaders watch over us.

Yesterday's corporations visibly cannot meet today's economic challenges.