For millions of years, this world has been a great gift to nearly everything living on it, a planet whose atmosphere, temperature, air, water, seasons, and weather were precisely calibrated to allow us - the big us, including forests and oceans, species large and small - to flourish.

The present rearranges the past. We never tell the story whole because a life isn't a story; it's a whole Milky Way of events and we are forever picking out constellations from it to fit who and where we are.

I walk wherever my errands take me.

Italian cities have long been held up as ideals, not least by New Yorkers and Londoners enthralled by the ways their architecture gives beauty and meaning to everyday acts.

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.

What is kind of beautiful about Katrina is that even though the media and officials are working hard at telling us everyone in New Orleans was a monster, in the immediate aftermath more than 200,000 people invite displaced strangers into their homes through hurricanehousing.org and an uncounted horde go to New Orleans and the Gulf Coast to give, to love, to be in solidarity, and to rebuild.

A labyrinth is a symbolic journey . . . but it is a map we can really walk on, blurring the difference between map and world.