“A good bookshop is just a genteel Black Hole that knows how to read.”

“The truth is that even big collections of ordinary books distort space, as can readily be proved by anyone who has been around a really old-fashioned secondhand bookshop, one that looks as though they were designed by M. Escher on a bad day and has more stairways than storeys and those rows of shelves which end in little doors that are surely too small for a full-sized human to enter. The relevant equation is: Knowledge = power = energy = matter = mass; a good bookshop is just a genteel Black Hole that knows how to read.”

“It doesn't stop being magic just because you know how it works.”

“Books bend space and time. One reason the owners of those aforesaid little rambling, poky secondhand bookshops always seem slightly unearthly is that many of them really are, having strayed into this world after taking a wrong turning in their own bookshops in worlds where it is considered commendable business practice to wear carpet slippers all the time and open your shop only when you feel like it.”

“You know how to pray, don’t you? Just put your hands together and hope.”

“In theory it was, around now, Literature. Susan hated Literature. She'd much prefer to read a good book.”

“How can you protect yourself by carrying a sword if you don’t know how to use it?’Not me, sir. Other people. They see the sword and don’t attack me,’ said Maladict patiently.Yes, but if they did, lad, you wouldn’t be any good with it,’ said the sergeant.No, sir. I’d probably settle for just ripping their heads off, sir. That’s what I mean by protection, sir. Theirs, not mine. And I’d get hell from the League if I did that, sir.”