Walking articulates both physical and mental freedom.

I feel like we're in a truly revolutionary period, not just in terms of practical activities to overthrow regimes in the Middle East or Occupy but also in terms of radical redefinitions. I feel like workers are a big part of it, but there's so much more going on.

I think that fear of the mob, the expectation that people, particularly poor and nonwhite people become mobs almost automatically in the absence of coercive authority, is inculcated by the media, the movies, and politicians.

The language of commerce has been engineered to describe the overt purpose of a thing, but cannot encompass fringe benefits or peripheral pleasures. It weighs the obvious against what in its terms are incomprehensible. When I drive from here to there, speed, privacy, control, and safety are easy to claim. When I walk, what happens is more vague, more ambiguous-and in many circumstances much richer. I am out in the world. It's exercise, though not so quantifiably as on a treadmill in a gym with a digital readout.

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.

Lost really has two disparate meanings. Losing things is about the familiar falling away, getting lost is about the unfamiliar appearing.

While a lot of people want to join the left to react against the mainstream or right, I in many ways react against the left - not a lot of its fundamental commitments, but its often dismal tone, righteousness, defeatism, etc.