"The main paused only a moment, then pulled the boy around so he could look the lad in the eye. "There's doing what's right, and there's doing what's safe. Most of the time you do what's safe because doing different will get you dead for no good reason, but there are times when doing what's safe will kill you too. Only it'll be a different kind of death. They dying will be slow, the sort that eats from the inside until breathing becomes a curse. Understand?"