“How curious it was, [...], that we humans had taken millions of year to crawl up out of the swamps and yet, within minutes of death, we were already tobogganing back down the slope.”

“There was no way out; not, at least, in this direction. I was like a hamster that had climbed to the top of the ladder in its cage and found there was nowhere to go but down. But surely hamsters knew in their hamster hearts that escape was futile; it was only we humans who were incapable of accepting our own helplessness.”

“Diamonds were nothing more than carbon, but carbon in a crystal lattice that made it the hardest known mineral in nature. That was the way we all were headed. I was sure of it. We were destined to be diamonds!How exciting it was to think that, long after the world had ended, whatever was left of our bodies would be transformed into a dazzling blizzard of diamond dust, blowing out towards eternity in the red glow of a dying sun.”

“Here we were, Father and I, shut up in a plain little room, and for the first time in my life having something that might pass for a conversation. We were talking to one another almost like adults; almost like one human being to another; almost like father and daughter. And even though I couldn't think of anything to say, I felt myself wanting it to go on and on until the last star blinked out.”

“Perhaps, I thought, whenever we began to breathe the breath of others, when the spinning atoms of their bodies began to mingle withour own, we took on something of their personality, like crystals in a snowflake. Perhaps we became something more, yet something lesser than ourselves.”

“I had to suppress a smile. Sherlock Holmes once remarked of his brother, Mycroft, that you were as unlikely to find him outside of the Diogenes Club as you were to meet a tramcar coming down a country lane. Like Mycroft, Father had his rails, and he ran on them. Except for church and the occasional short-tempered dash to the train to attend a stamp show, Father seldom, if ever, stuck his nose out-of-doors.”

“Whenever I'm out-of-doors and find myself wanting to have a first-rate think, I fling myself down on my back, throw my arms and legs out so that I look like an asterisk, and gaze at the sky. ”