“Now as I stood on the roof of my house, taking in this unexpected view, it struck me how rather glorious it was that in two thousand years of human activity the only thing that had stirred the notice of the outside world even briefly was the finding of a Roman phallic pendant. The rest was just centuries of people quietly going about their daily business - eating, sleeping, having sex, endeavoring to be amused- and it occurred to me, with the forcefulness of a thought experienced in 360 degrees, that that's really what history mostly is: masses of people doing ordinary things. Even Einstein will have spent large parts of his life thinking about his holidays o new hammock or how dainty was the ankle on the young lady alighting from the tram across the street. These are the sort of things that fill our life and thoughts, and yet we treat them as incidental and hardly worthy of serious consideration. I don't know how many hours of my school years were spent considering the Missouri Compromise or the War of the Roses, but it was vastly more than I was ever encouraged or allowed to give to the history of eating. sleeping, having sex and endeavoring to be amused.”

“...and it occurred to me, with the forcefulness of a thought experienced in 360 degrees, that that's really what history mostly is: masses of people doing ordinary things.”

“I mention all this to make the point that if you were designing an organism to look after life in our lonely cosmos, to monitor where it is going and keep a record of where it has been, you wouldn't choose human beings for the job.But here's an extremely salient point: we have been chosen, by fate or Providence or whatever you wish to call it. It's an unnerving thought that we may be living the universe's supreme achievement and its worst nightmare simultaneously.Because we are so remarkably careless about looking after things, both when alive and when not, we have no idea-- really none at all-- about how many things have died off permanently, or may soon, or may never, and what role we have played in any part of the process. In 1979, in the book The Sinking Ark, the author Norman Myers suggested that human activities were causing about two extinctions a week on the planet. By the early 1990s he had raised the figure to about some six hundred per week. (That's extinctions of all types-- plants, insects, and so on as well as animals.) Others have put the figure ever higher-- to well over a thousand a week. A United Nations report of 1995, on the other hand, put the total number of known extinctions in the last four hundred years at slightly under 500 for animals and slightly over 650 for plants-- while allowing that this was "almost certainly an underestimate," particularly with regard to tropical species. A few interpreters think most extinction figures are grossly inflated.The fact is, we don't know. Don't have any idea. We don't know when we started doing many of the things we've done. We don't know what we are doing right now or how our present actions will affect the future. What we do know is that there is only one planet to do it on, and only one species of being capable of making a considered difference. Edward O. Wilson expressed it with unimprovable brevity in The Diversity of Life: "One planet, one experiment."If this book has a lesson, it is that we are awfully lucky to be here-- and by "we" i mean every living thing. To attain any kind of life in this universe of ours appears to be quite an achievement. As humans we are doubly lucky, of course: We enjoy not only the privilege of existence but also the singular ability to appreciate it and even, in a multitude of ways, to make it better. It is a talent we have only barely begun to grasp.We have arrived at this position of eminence in a stunningly short time. Behaviorally modern human beings-- that is, people who can speak and make art and organize complex activities-- have existed for only about 0.0001 percent of Earth's history. But surviving for even that little while has required a nearly endless string of good fortune.We really are at the beginning of it all. The trick, of course, is to make sure we never find the end. And that, almost certainly, will require a good deal more than lucky breaks.”

“But that's the glory of foreign travel, as far as I am concerned. I don't want to know what people are talking about. I can't think of anything that excites a greater sense of childlike wonder than to be in a country where you are ignorant of almost everything. Suddenly you are five years old again. You can't read anything, you have only the most rudimentary sense of how things work, you can't even reliably cross a street without endangering your life. Your whole existence becomes a series of interesting guesses.”

“As we parted at the Natural History Museum in London, I asked Richard Fortey how science ensures that when one person goes there's someone ready to take his place.He chuckled rather heartily at my naiveté. 'I'm afraid it's not as if we have substitutes sitting on the bench somewhere waiting to be called in to play. When a specialist retires or, even more unfortunately, dies, that can bring a stop to things in that field, sometimes for a very long while.'And I suppose that's why you value someone who spends forty-two years studying a single species of plant, even if it doesn't produce anything terribly new?''Precisely,' he said, 'precisely.' And he really seemed to mean it.”

“It is easy to overlook this thought that life just is. As humans we are inclined to feel that life must have a point. We have plans and aspirations and desires. We want to take constant advantage of all the intoxicating existence we've been endowed with. But what's life to a lichen? Yet its impulse to exist, to be, is every bit as strong as ours—arguably even stronger. If I were told that I had to spend decades being a furry growth on a rock in the woods, I believe I would lose the will to go on. Lichens don't. Like virtually all living things, they will suffer any hardship, endure any insult, for a moment's additional existence. Life, in short, just wants to be.”

“Even the simplest things had a glorious pointlessness to them. When buttons came in, about 1650, people couldn't get enough of them and arrayed them in decorative profusion on the backs and collars and sleeves of coats, where they didn't actually do anything. One relic of this is the short row of pointless buttons that are still placed on the underside of jacket sleeves near the cuff. These have been purely decorative and have never had a purpose, yet 350 years later on we continue to attach them as if they are the most earnest necessity.”