This one is good starting from the dedication:
They may be called the Palace Guard, the City Guard, or the Patrol.
Whatever the name, their purpose in any work of heroic fantasy is identical: it
is, round about Chapter Three (or ten minutes into the film) to rush into the
room, attack the hero one at a time, and be slaughtered. No one ever asks
them if they wanted to.
This book is dedicated to those fine men.
And a few other good quotes:
Say what you liked about the people of Ankh-Morpork, they had always been
staunchly independent, yielding to no man their right to rob, defraud,
embezzle and murder on an equal basis. This seemed absolutely right, to Vimes' way of thinking. There was no difference at all between the richest man and the poorest beggar, apart from the fact that the former had lots of money, food, power, fine clothes and good health. But at least he wasn't any better. Just richer, fatter, more powerful, better dressed and healthier.
The food was good solid stuff for a cold morning, all calories and fat and
protein and maybe a vitamin crying softly because it was all alone.
Guards! Guards! Terry Pratchett. Harper Torch. 1989