Our instinct may be to see the impossibility of tracking everything down as frustrating, dispiriting, perhaps even appalling, but it can just as well be viewed as almost unbearably exciting. We live on a planet that has a more or less infinite capacity to surprise. What reasoning person could possibly want it any other way?

Most of the time I am sunk in thought, but at some point on each walk there comes a moment when I look up and notice, with a kind of first-time astonishment, the amazing complex delicacy of the words, the casual ease with which elemental things come together to form a composition that is—whatever the season, wherever I put my besotted gaze—perfect.

Woods are not like other spaces. To begin with, they are cubic. Their trees surround you, loom over you, press in from all sides. Woods choke off views & leave you muddled & without bearings. They make you feel small & confused & vulnerable, like a small child lost in a crowd of strange legs. Stand in a desert or prairie & you know you are in a big space. Stand in the woods and you only sense it. They are vast, featureless nowhere. And they are alive.

Physicists are atoms' way of thinking about atoms.

Because we humans are big and clever enough to produce and utilize antibiotics and disinfectants, it is easy to convince ourselves that we have banished bacteria to the fringes of existence. Don't you believe it. Bacteria may not build cities or have interesting social lives, but they will be here when the Sun explodes. This is their planet, and we are on it only because they allow us to be.

Taking a scenic route in Southeast Iowa is like talking about a good Barry Manilow album. You have to make certain allowances.

For a long time it puzzled me how something so expensive, so leading edge, could be so useless. And then it occurred to me that a computer is a stupid machine with the ability to do incredibly smart things, while computer programmers are smart people with the ability to do incredibly stupid things. They are, in short, a perfect match.