“Hurricane Sandy is a disturbing sign of things to come. We must heed this warning and act quickly to solve the climate crisis. Dirty energy makes dirty weather.”

Each and every one of us can make changes in the way we live our lives and become part of the solution [to climate change]

When fear displaces reason, the result is often irrational hatred and division.

The warnings about global warming have been extremely clear for a long time. We are facing a global climate crisis. It is deepening. We are entering a period of consequences.

I think the fact that within the bitcoin universe an algorithm replaces the functions of the government is actually pretty cool. I am a big fan of bitcoin.

For me, the most disturbing aspect of the Republican political culture is how it puts its unquenchable thirst for power, domination and a radical ideology above facts, reason and the truth.

Distributed intelligence is the key to the advancement of human civilization. Dictatorships, communist countries, monarchies in the past all eventually collapsed because of their inefficiency in moving information.

We have a planetary emergency. We have to find a way to create, in the generation of those alive today, a sense of generational mission.

Making consumer choices that reward eco-friendly products and companies is a great way to start.

Our new technologies, combined with our numbers, have made us, collectively, a force of nature.

When it comes to climate, we can all make a big difference.

Civil disobedience has an honourable history, and when the urgency and moral clarity cross a certain threshold, then I think that civil disobedience is quite understandable, and it has a role to play.

The will to act is a renewable resource.

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.

We can believe in the future and work to achieve it and preserve it, or we can whirl blindly on, behaving as if one day there will be no children to inherit our legacy. The choice is ours; the earth is in balance.

Consider what kind of car you get. Buy cars and other products that have the least impact environmentally.

I have always been fascinated with those who try to look over the horizon and see things that are coming at us.