Perhaps it’s that you can’t go back in time, but you can return to the scenes of a love, of a crime, of happiness, and of a fatal decision; the places are what remain, are what you can possess, are what is immortal. They become the tangible landscape of memory, the places that made you, and in some way you too become them. They are what you can possess and in the end what possesses you.

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

You write your books. You scatter your seeds. Rats might eat them, or they might rot. In California, some seeds lie dormant for decades because they only germinate after fire, and sometimes the burned landscape blooms most lavishly.

We have only the language for fun and miserable, and maybe we need language for deep and shallow, meaningful and meaningless.

It is the job of artists to open doors and invite in prophesies, the unknown, the unfamiliar; it’s where their work comes from, although its arrival signals the beginning of the long disciplined process of making it their own. Scientists too, as J. Robert Oppenheimer once remarked, ‘live always at the ‘edge of mystery’­—the boundary of the unknown.’ But they transform the unknown into the known, haul it in like fishermen; artists get you out into that dark sea.

Many people nowadays live in a series of interiors...disconnected from each other. On foot everything stays connected, for while walking one occupies the spaces between those interiors in the same way one occupies those interiors. One lives in the whole world rather than in interiors built up against it.

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.