Walking articulates both physical and mental freedom.

There is no one as dangerous as he or she who has nothing to lose.

I'm grateful that, after an early life of being silenced, sometimes violently, I grew up to have a voice, circumstances that will always bind me to the rights of the voiceless.

The oil corporations spend a lot of money to get, say, the tar sands pipeline through, but nobody's - you know, there are definitely environmentalists being paid - but a lot of people are acting for something other than financial compensation. So if the tar sands pipeline doesn't get made, it's because a huge amount of people are doing something that doesn't involve remuneration, money, etc., because we're not actually the self-interested financial instruments that economists like to imagine we are.

The subject of walking is, in some sense, about how we invest universal acts with particular meanings. Like eating or breathing, it can be invested with wildly different cultural meanings, from the erotic to the spiritual, from the revolutionary to the artistic.

We talk about politicians being in public life, but they seldom appear in the public space where everyone is free to appear as a citizen.

The new architecture and urban design of segregation could be called Calvinist: they reflect a desire to live in a world of predestination rather than chance, to strip the world of its wide-open possibilities and replace them with freedom of choice in the marketplace.