“It wasn't until we dropped him at his university dormitory and left him there looking touchingly lost and bewildered amid an assortment of cardboard boxes and suitcases in a spartan room not unlike a prison cell that it really hit home that he was vanishing out of our lives and into his own.”

“Originally, the cellar served primarily as a coal store. Today it holds the boiler, idle suitcases, out-of-season sporting equipment, and many sealed cardboard boxes that are almost never opened but are always carefully transferred from house to house with every move in the belief that one day someone might want some baby clothes that have been kept in a box for twenty-five years.”

“I'm quite certain that if the rest of the world vanished overnight and the development of cricket were left in Australian hands, within a generation, the players would be wearing shorts and using the bats to hit each other, and the thing is, it'd be a much better game for it.”

“When the poet Paul Valery once asked Albert Einstein if he kept a notebook to record his ideas, Einstein looked at him with mild but genuine surprise. "Oh, that's not necessary," he replied . "It's so seldom I have one.”

“On the morning of our second day, we were strolling down the Champs-Elysées when a bird shit on his head. ‘Did you know a bird’s shit on your head?’ I asked a block or two later.Instinctively Katz put a hand to his head, looked at it in horror – he was always something of a sissy where excrement was concerned; I once saw him running through Greenwood Park in Des Moines like the figure in Edvard Munch’s ‘The Scream’ just because he had inadvertently probed some dog shit with the tip of his finger – and with only a mumbled ‘Wait here’ walked with ramrod stiffness in the direction of our hotel. When he reappeared twenty minutes later he smelled overpoweringly of Brut aftershave and his hair was plastered down like a third-rate Spanish gigolo’s, but he appeared to have regained his composure. ‘I’m ready now,’ he announced.Almost immediately another bird shit on his head. Only this time it really shit. I don’t want to get too graphic, in case you’re snacking or anything, but if you can imagine a pot of yoghurt upended onto his scalp, I think you’ll get the picture. ‘Gosh, Steve, that was one sick bird,’ I observed helpfully.Katz was literally speechless. Without a word he turned and walked stiffly back to the hotel, ignoring the turning heads of passers-by. He was gone for nearly an hour. When at last he returned, he was wearing a windcheater with the hood up. ‘Just don’t say a word,’ he warned me and strode past. He never really warmed to Paris after that.”

“When cells are no longer needed, they die with what can only be called great dignity. They take down all the struts and buttresses that hold them together and quietly devour their component parts. The process is known as apoptosis or programmed cell death. Every day billions of your cells die for your benefit and billions of others clean up the mess. Cells can also die violently- for instance, when infected- but mostly they die because they are told to. Indeed, if not told to live- if not given some kind of active instruction from another cell- cells automatically kill themselves. Cells need a lot of reassurance. When, as occasionally happens, a cell fails to expire in the prescribed manner, but rather begins to divide and proliferate wildly, we call the result cancer. Cancer cells are really just confused cells. Cells make this mistake fairly regularly, but the body has elaborate mechanisms for dealing with it. It is only very rarely that the process spirals out of control. On average, humans suffer one fatal malignancy for each 100 million billion cell divisions. Cancer is bad luck in every possible sense of the term.”

“Cavendish is a book in himself. Born into a life of sumptuous privilege- his grandfathers were dukes, respectively, of Devonshire and Kent- he was the most gifted English scientist of his age, but also the strangest. He suffered, in the words of one of his few biographers, from shyness to a "degree bordering on disease." Any human contact was for him a source of the deepest discomfort. Once he opened his door to find an Austrian admirer, freshly arrived from Vienna, on the front step. Excitedly the Austrian began to babble out praise. For a few moments Cavendish received the compliments as if they were blows from a blunt object and then, unable to take any more, fled down the path and out the gate, leaving the front door wide open. It was some hours before he could be coaxed back to the property. Even his housekeeper communicated with him by letter.Although he did sometimes venture into society- he was particularly devoted to the weekly scientific soirees of the great naturalist Sir Joseph Banks- it was always made clear to the other guests that Cavendish was on no account to be approached or even looked at. Those who sought his views were advised to wander into his vicinity as if by accident and to "talk as it were into vacancy." If their remarks were scientifically worthy they might receive a mumbled reply, but more often than not they would hear a peeved squeak (his voice appears to have been high pitched) and turn to find an actual vacancy and the sight of Cavendish fleeing for a more peaceful corner.”