On pages 202-203 there is a passage I liked that reads as follows: "Here are priests; and though they are my enemies, pass by them silently and with sleeping swords. Among them too there are heroes; many of them have suffered too much: therefore they want others to suffer."
I take this to mean that even if someone is your enemy, you want to be careful around him and maybe even avoid him because he may be capable of terrible things and of inflicting terrible harm. As regards the priests it occurs to me that they have suffered, this suffering has made them miserable, and they will take advantage of any opportunity they get to make others suffer.
[Lightly edited to enhance readability -TT]