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.

Push it. examine all things intensely and relentlessly.

One of the few things I know about writing is this: Spend it all, shoot it, play it, lose it, all, right away, every time. Do not hoard what seems good for a later place in the book, or for another book, give it, give it all, give it now.

Having chosen this foolishness, I was a free being. How could the world ever stop me, how could I betray myself, if I was not afraid?

I breathed the air of history all unaware, and walked oblivious through its littered layers.

The point of going somewhere like the Napo River in Ecuador is not to see the most spectacular anything. It is simply to see what is there.

I feel as though I stand at the foot of an infinitely high staircase, down which some exuberant spirit is flinging tennis ball after tennis ball, eternally, and the one thing I want in the world is a tennis ball.