Carbon zero simply means that the emissions you are releasing either are zero or balance out to zero.

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.

‎And yet I have had the weakness, and have still the weakness, to wish you to know with what a sudden mastery you kindled me, heap of ashes that I am, into fire.

Whenever someone introduces themselves as a Master or a Guru, I immediately wonder…If those are the lies they tell themselves, what lies will they tell me?

Wit is the epitaph of an emotion.

To thrive in this new age of hyper-change and growing uncertainty, it is now an imperative to learn a new competency - how to accurately anticipate the future.

It's politely assumed that democracy is a means of containing and restraining violence. But violence comes not from genes but from ideas

I enjoy research; in fact research is so engaging that it would be easy to go on for years, and never write the novel at all.

The only free road, the Underground Railroad, is owned and managed by the Vigilant Committee. They have tunneled under the whole breadth of the land.

Right on through today, my lungs and stamina are my engine. I'm not nearly the strongest guy or the most flexible, but I can definitely sustain pace on the mountain.

You're not really free until you're free from trying to please everybody.

It’s amazing how lovely common things become, if one only knows how to look at them.