I don't think I've drunk enough beer to understand that.

The price of being the best is having to be the best.

This is space. It's sometimes called the final frontier. (Except that of course you can't have a final frontier, because there'd be nothing for it to be a frontier to, but as frontiers go, it's pretty penultimate . . .)

Progress just means bad things happen faster.

Of course, Ankh-Morpork's citizens had always claimed that the river water was incredibly pure. Any water that had passed through so many kidneys, they reasoned, had to be very pure indeed.

Destiny is important, see, but people go wrong when they think it controls them. It's the other way around.

Someone out there was about to find that their worst nightmare was a maddened Librarian. With a badge.