" Of all the types of beings one finds oneself dealing with, the true believers are the worst. A typical sentient’s psyche is a spiderweb. Pull on the right thread and you will get the desired result. Praise them and they will like you. Ridicule them and they’ll hate you. Greedy can be bought, timid can be frightened, smart can be persuaded, but the zealots are immune to money, fear, or reason. A zealot’s psyche is a tightrope. They have severed everything else in favor of their goal. They will pay any price for their victory, and that makes them infinitely more dangerous. "

― Ilona Andrews , Sweep in Peace (Innkeeper Chronicles, #2)