All the green in the planted world consists of these whole, rounded chloroplasts wending their ways in water. If you analyze a molecule of chlorophyll itself, what you get is one hundred thirty-six atoms of hydrogen, carbon, oxygen, and nitrogen arranged in an exact and complex relationship around a central ring. At the ring's center is a single atom of magnesium. Now: If you remove the atom of magnesium and in its exact place put an atom of iron, you get a molecule of hemoglobin. The iron atom combines with all the other atoms to make red blood, the streaming red dots in the goldfish's tail.

Geography is the key, the crucial accident of birth. A piece of protein could be a snail, a sea lion, or a systems analyst, but it had to start somewhere. This is not science; it is merely metaphor. And the landscape in which the protein "starts" shapes its end as surely as bowls shape water.

We are here on the planet only once, and might as well get a feel for the place.

It's about waking up. A child wakes up over and over again, and notices that she's living. She dreams along, loving the exuberant life of the senses, in love with beauty and power, oblivious to herself -- and then suddenly, bingo, she wakes up and feels herself alive. She notices her own awareness. And she notices that she is set down here, mysteriously, in a going world.

When you open a book,” the sentimental library posters said, “anything can happen.” This was so. A book of fiction was a bomb. It was a land mine you wanted to go off. You wanted it to blow your whole day. Unfortunately, hundreds of thousands of books were duds. They had been rusting out of everyone’s way for so long that they no longer worked. There was no way to distinguish the duds from the live mines except to throw yourself at them headlong, one by one.

The universe is illusion merely, not one speck of it real, and we are not only its victims, falling always into or smashed by a planet slung by the sun-but also its captives, bound by the mineral-made ropes of our senses.

What do I make of all this texture? What does it mean about the kind of world in which I have been set down? The texture of the world, its filigree and scrollwork, means that there is the possibility for beauty here, a beauty inexhaustible in its complexity, which opens to my knock, which answers in me a call I do not remember calling, and which trains me to the wild and extravagant nature of the spirit I seek.