“Curiously, among the few survivors from this culinary onslaught is one that is most difficult to understand: the fish knife. Though it remains the standard instrument for dealing with fish of all kinds, no one has ever identified a single advantage conferred by its odd scalloped shape or worked out the original thinking behind it. There isn't a single kind of fish that it cuts better or bones more delicately than a conventional knife does.”

“Physics is really nothing more than a search for ultimate simplicity, but so far all we have is a kind of elegant messiness.”

“Most of what has lived on Earth has left behind no record at all.”

“Whereas the food debris of the Neanderthals shows a wide variety of animal bones, suggesting that they took whatever they could find, archaeological remnants from Homo sapiens show that they sought out particular kinds of game and tracked animals seasonally. All of this strongly suggests that they possessed a linguistic system sufficiently sophisticated to deal with concepts such as: “Today let’s kill some red deer. You take some big sticks and drive the deer out of the woods and we’ll stand by the riverbank with our spears and kill them as they come down towards us.” By comparison Neanderthal speech may have been something more like: “I’m hungry. Let’s hunt.”

“Mrs Loudon was even more successful than her husband thanks to a single work, Practical Instructions in Gardening for Ladies, published in 1841, which proved to be magnificently timely. It was the first book of any type ever to encourage women of elevated classes to get their hands dirty and even to take on a faint glow of perspiration. This was novel almost to the point of eroticism. Gardening for Ladies bravely insisted that women could manage gardening independent of male supervision if they simply observed a few sensible precautions – working steadily but not too vigorously, using only light tools, never standing on damp ground because of the unhealthful emanations that would rise up through their skirts.”

“If you imagine the 4,500-bilion-odd years of Earth's history compressed into a normal earthly day, then life begins very early, about 4 A.M., with the rise of the first simple, single-celled organisms, but then advances no further for the next sixteen hours. Not until almost 8:30 in the evening, with the day five-sixths over, has Earth anything to show the universe but a restless skin of microbes. Then, finally, the first sea plants appear, followed twenty minutes later by the first jellyfish and the enigmatic Ediacaran fauna first seen by Reginald Sprigg in Australia. At 9:04 P.M. trilobites swim onto the scene, followed more or less immediately by the shapely creatures of the Burgess Shale. Just before 10 P.M. plants begin to pop up on the land. Soon after, with less than two hours left in the day, the first land creatures follow. Thanks to ten minutes or so of balmy weather, by 10:24 the Earth is covered in the great carboniferous forests whose residues give us all our coal, and the first winged insects are evident. Dinosaurs plod onto the scene just before 11 P.M. and hold sway for about three-quarters of an hour. At twenty-one minutes to midnight they vanish and the age of mammals begins. Humans emerge one minute and seventeen seconds before midnight. The whole of our recorded history, on this scale, would be no more than a few seconds, a single human lifetime barely an instant. Throughout this greatly speeded-up day continents slide about and bang together at a clip that seems positively reckless. Mountains rise and melt away, ocean basins come and go, ice sheets advance and withdraw. And throughout the whole, about three times every minute, somewhere on the planet there is a flash-bulb pop of light marking the impact of a Manson-sized meteor or one even larger. It's a wonder that anything at all can survive in such a pummeled and unsettled environment. In fact, not many things do for long.”

“As the saying goes, it takes all kinds to make the world go around, though perhaps some shouldn't go quite so far around it as others.”