You don't just have people who wake up in the morning and say, "What evil things can I do today, because I'm Mr. Evil?" People do things for what they think are justified reasons. Everybody is the hero of their own story, and you have to keep that in mind. If you read a lot of history, as I do, even the worst and most monstrous people thought they were the good guys. We're all very tangled knots.
George R. R. MartinWhy do the Gods make kings and queens if not to protect the ones who can't protect themselves?
George R. R. MartinThe Iron Throne is mine by rights. All those who deny that are my foes." "The whole of the realm denies it, brother," said Renley. "Old men deny it with their death rattle, and unborn children deny it in their mothers' wombs. They deny it in Dorne and they deny it on the Wall. No one wants you for their king. Sorry.
George R. R. Martin