An asteroid could hit us at any moment. This is not - and also, the most successful kind of life on this planet is not us, it's microbes. They're the ones who greatly outnumber us, and may eventually destroy us.

Anyone who has invented a better mousetrap, or the contemporary equivalent, can expect to be harassed by strangers demanding that you read their unpublished manuscripts or undergo the humiliation of public speaking, usually on remote Midwestern campuses.

Some of us still get all weepy when we think about the Gaia Hypothesis, the idea that earth is a big furry goddess-creature who resembles everybody's mom in that she knows what's best for us. But if you look at the historical record - Krakatoa, Mt. Vesuvius, Hurricane Charley, poison ivy, and so forth down the ages - you have to ask yourself: Whose side is she on, anyway?

There's more pressure on women to be chirpy and perky.

Personally, I have nothing against work, particularly when performed, quietly and unobtrusively, by someone else. I just don't happen to think it's an appropriate subject for an 'ethic.'

At issue is not only knowledge of the world but our survival as individuals and as a species. All the basic technologies ever invented by humans to feed and protect themselves depend on a relentless commitment to hard-nosed empiricism: you cannot assume that your arrowheads will pierce the hide of a bison or that your raft will float just because the omens are propitious and you have been given supernatural reassurance that they will. You have to be sure.

One of the most essential and mundane of human activities - taking care of children - requires high levels of anxious vigilance. ... [Parents] dare not risk assuming that the sudden quiet from the toddlers' room means they are studying with Baby Einstein. Visualize fratricidal stranglings and electric outlets stabbed with forks: this is how we have reproduced our genomes.