Roads are a record of those who have gone before.

Perhaps the central question about [Eliot] Porter's work is about the relationship between science, aesthetics, and environmental politics. His brother, the painter and critic Fairfield Porter, wrote in a 1960 review of [Porter's] colour photographs: 'There is no subject and background, every corner is alive,' and this suggests what an ecological aesthetic might look like.

A restlessness has seized hold of many of us, a sense that we should be doing something else, no matter what we are doing, or doing at least two things at once, or going to check some other medium. It's an anxiety about keeping up, about not being left out or getting behind.

For me, being in a car or on an airplane is like being in limbo. It's this dead zone between two places. But to walk, you're some place that's already interesting. You're not just between places. Things are happening.

We are moving into a world of unaccountable and secretive corporations that manage all our communications and work hand in hand with governments to make us visible to them. Our privacy is being strip-mined and hoarded.

Eduardo Galeano notes that America was conquered, but not discovered, that the men who arrived with a religion to impose and dreams of gold never really knew where they were, and that this discovery is still taking place in our time.

Leave the door open for the unknown, the door into the dark. That’s where the most important things come from, where you yourself came from, and where you will go.