Colonialism of one kind or another, imperialism of one kind or another, and slavery, and on and on and on.

Climate change is the single biggest thing that humans have ever done on this planet. The one thing that needs to be bigger is our movement to stop it.

The technology we need most badly is the technology of community, the knowledge about how to cooperate to get things done.

Very few people on earth ever get to say: 'I am doing, right now, the most important thing I could possibly be doing.' If you'll join this fight that's what you'll get to say

what you do every day is what forms your mind and precious few of us can or would spend most days outdoors.

In 50 years, no one will care about the fiscal cliff or the Euro crisis. They'll just ask, "So the Arctic melted, and then what did you do?"

Global warming is no longer a philosophical threat, no longer a future threat, no longer a threat at all. It's our reality.

Advent: the time to listen for footsteps - you can't hear footsteps when you're running yourself.

We've been given a warning by science, and a wake-up call by nature; it is up to us now to heed them.

The real negotiation is between humans on the one hand and chemistry and physics on the other. And chemistry and physics, unfortunately, don't bargain.

We can either save the planet from catastrophic warming, or protect fossil fuel CEOs. Not both. Do the math(s)

Be happy when you work, thankful when you earn, cautious when you spend, shrewd when you save, and charitable when you give.

Water was liquid silver, water was gold. It was clarity—a sacred thing. Drinking was no longer something to take for granted. I’d never needed to consider water before.

What's matter of importance is that if you can make your ownself laugh and smile.

The U.S. government has been preoccupied with health care 'reform, ' but this refers to improving access and insurance coverage and has little or nothing to do with innovation.

We flew down weekly to meet with IBM, but they thought the way to measure software was the amount of code we wrote, when really the better the software, the fewer lines of code.

With more than 1,300 sites of care, VA operates the largest integrated health care system in the county

The study of mathematics, like the Nile, begins in minuteness but ends in magnificence.

A bomb fell on Italy. It slid off!

In the decades to come, the successful places will tend to be the smaller traditional towns and cities with viable farming hinterlands.

[On the movie "American Hot Wax:] A plot so thin you could thread a needle with it.