“There is much unexplained in the world. It behoves one to be wary at all times. Just when you think you've got the hang of it, along comes string theory, collateralised debt obligations or Björk's new album, and bam! You're as confused as you were when you first started.”

“That's the big difference between [the BookWorld] and [the RealWorld]," said Plum. "When things happen after a randomly pointless event, all that follows is simply unintended consequences, not a coherent narrative thrust that propels the story forward."I rolled the idea of unintended consequences around in my head. "Nope, I said finally, "you've got me on that one.""It confuses me, too," admitted Plum, "but that's the RealWorld for you. A brutal and beautiful place, run for the most part on passion, fads, incentives, and mathematics. A lot of mathematics.”

“Unless the hole is MEANT to be square,' I said with a sudden erudition that surprised me, 'in which case, all the round pegs are the ones that are wrong, and if the ROUND hole is one that is not meant to be square, then the square ones will, no, hang on--''Shame,' said the historian, 'and you were doing so well.”

“Remember, Thursday, that scientific thought -- indeed, any mode of thought, whether it be religious or philosophical or anything else -- is just like the fashions that we wear -- only much longer lived. It's a little like a boy band.""Scientific thought a boy band? How do you figure that?""Well, every now and then a boy band comes along. We like it, buy the records, posters, parade them on TV, idolise them right up until --"..."-- the next boy band?" I suggested."Precisely. Aristotle was a boy band. A very good one but only number six or seven. He was the best boy band until Isaac Newton, but even Newton was transplanted by an even newer boy band. Same haircuts -- but different moves.""Einstein, right?""Right. Do you see what I'm saying?""I think so.""Good. So try and think of maybe thirty or forty boy bands past Einstein. To where we would regard Einstein as someone who glimpsed a truth, played one good chord on seven forgettable albums.""Where is this going, Dad?""I'm nearly there. Imagine a boy band so good that you never needed another boy band ever again. Can you imagine that?”

“Were you listening to a word I said?' 'I kind of switched off when you drew breath.”

“You many have noticed I have a temper ... but when I calmed down, I realized that this world, blighted and imperfect as it is, would be better with you in it.”

“You have many fine qualities that I admire. But you are out of time. You should have been born a century ago, when values such as yours meant something.”