Getting lost was not a matter of geography so much as identity, a passionate desire, even an urgent need, to become no one and anyone, to shake off the shackles that remind you who you are, who others think you are.

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.

Perhaps walking is best imagined as an 'indicator species,' to use an ecologist's term. An indicator species signifies the health of an ecosystem, and its endangerment or diminishment can be an early warning sign of systemic trouble. Walking is an indicator species for various kinds of freedom and pleasures: free time, free and alluring space, and unhindered bodies.

When someone doesn't show up, the people who wait sometimes tell stories about what might have happened and come to half believe the desertion, the abduction, the accident. Worry is a way to pretend that you have knowledge or control over what you don't--and it surprises me, even in myself, how much we prefer ugly scenarios to the pure unknown. Perhaps fantasy is what you fill up maps with rather than saying that they too contain the unknown.

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.

Sometimes a few passionate people change the world; sometimes they start a mass movement and millions do.

Getting lost was not a matter of geography so much as identity, a passionate desire, even an urgent need, to become no one and anyone, to shake off the shackles that remind you who you are, who others think you are.