There's folk who want to preserve the world, and folk who want to destroy it. What we do is keep peace. Protect decent people from those that'd maraud and steal and murder, and muties gone so far they're more creature than human. Settle disputes between one man and another - or one town and another - rule fairly in our turn and fight against those who want to overthrow the order of things and leave chaos in their wake, whether they be men or wizards or...anything else the world might throw at us.
It's a high calling, sai, and I've been in training for it since I were a lad of six. So I like to think we keep the world static and make it better, by way of stopping it from getting worse. Does that make sense to ya?