Humans have made a huge hole in nature in the last 10,000 years. [With de-extinction,] we have the ability now, and maybe the moral obligation, to repair some of the damage.

We can influence the future but not see it.

Once a new technology rolls over you, if you're not part of the steamroller, you're part of the road.

All buildings are predictions. All predictions are wrong.

We have wished, we eco-freaks, for a disaster or for a social change to come and bomb us into Stone Age, where we might live like Indians in our valley, with our localism, our appropriate technology, our gardens, our homemade religion-guilt-free at last!

Likewise, with solar, especially here in California, we're discovering that the 80 solar farm schemes that are going forward want to basically bulldoze 1,000 sq. mi. of southern California desert. Well, as an environmentalist, we would rather that didn't happen.

When a generation talks just to itself, it becomes more filled with folly than it might have otherwise.