The fight for free space-for wilderness and for public space-must be accompanied by a fight for free time to spend wandering in that space. Otherwise the individual imagination will be bulldozed over for the chain-store outlets of consumer appetite, true-crime titillations, and celebrity crises.

The poet Marianne Moore famously wrote of 'real toads in imaginary gardens,' and the labyrinth offers us the possibility of being real creatures in symbolic space...In such spaces as the labyrinth we cross over [between real and imaginary spaces]; we are really travelling, even if the destination is only symbolic.

They are all beasts of burden in a sense, ' Thoreau once remarked of animals, 'made to carry some portion of our thoughts.' Animals are the old language of the imagination; one of the ten thousand tragedies of their disappearance would be a silencing of this speech.

Walkers are 'practitioners of the city,' for the city is made to be walked. A city is a language, a repository of possibilities, and walking is the act of speaking that language, of selecting from those possibilities. Just as language limits what can be said, architecture limits where one can walk, but the walker invents other ways to go.

More and more I think of privatisation as being not just about the takeover of resources and power by corporate interests, but as the retreat of citizens to private life and private space, screened from solidarity with strangers and increasingly afraid or even unable to imagine acting in public.

Stories are compasses and architecture, we navigate by them, we build our sanctuaries and our prisons out of them, and to be without a story is to be lost in the vastness of a world that spreads in all directions like arctic tundra or sea ice.

Space--as landscape, terrain, spectacle, experience--has vanished.