Such reciprocity is the very structure of perception. We experience the sensuous world only by rendering ourselves vulnerable to that world. Sensory perception is this ongoing interweavement: the terrain enters into us only to the extent that we allow ourselves to be taken up within that terrain.

Does the human intellect, or "reason," really spring us free from our inherence in the depths of this wild proliferation of forms? Or on the contrary, is the human intellect rooted in, and secretly borne by, our forgotten contact with the multiple nonhuman shapes that surround us on every hand?

Each place its own mind, its own psyche! Oak, Madrone, Douglas fir, red-tailed hawk, serpentine in the sandstone, a certain scale to the topography, drenching rains in the winters, fog off-shore in the summers, salmon surging up the streams - all these together make up a particular state of mind, a place-specific intelligence shared by all the humans that dwell therein, but also by the coyotes yapping in those valleys, by the bobcats and the ferns and the spiders, by all beings who live and make their way in that zone. Each place its own psyche. Each sky its own blue.

No event for the Koyukon - or for most other indigenous peoples - is ever entirely meaningless or accidental, but neither is any event entirely predetermined or fated. Rather like the trickster, Raven, who first gave it its current form, the sensuous world is a spontaneous, playful and dangerous mystery in which we participate, an articulate and improvisational field of powers ever responsive to human actions and spoken words.

For the Amahuaca, the Koyukon, the Apache, and the diverse Aboriginal peoples of Australia - as for numerous other indigenous peoples - the coherence of human language is inseparable from the coherence of the surrounding ecology, from the expressive vitality of the more-than-human terrain. It is the animate earth that speaks; human speech is but a part of that vaster discourse.

Each thing organizes the space around it, rebuffing or sidling up against other things; each thing calls, gestures, beckons to other beings or battles them for our attention; things expose themselves to the sun or retreat among the shadows, shouting with their loud colors or whispering with their seeds; rocks snag lichen spores from the air and shelter spiders under their flanks; clouds converse with the fathomless blue and metamorphose into one another; they spill rain upon the land, which gathers in rivulets and carves out canyons.

It was a though we’d been living for a year in a dense grove of old trees, a cluster of firs, each with its own rhythm and character, from whom our bodies had drawn not just shelter but perhaps even a kind of guidance as we grew into a family.