The Blinding Power of Power

In Peter Jackson's The Lord of the Rings, the One Ring lures all who are near with its power. When put on, it also turns the wearer invisible. I'd never considered the reasons for this power of invisibility, until I read this article:

Power, explains Prof. Galinsky, focuses people on their own internal goals—blinding them, in the process, to how others may view them. In Plato's "Republic," Socrates invokes the myth of the ring of Gyges, which conferred upon its wearer the power of being invisible to others. If we wear such a ring at will, Socrates says, "No man would keep his hands off what was not his own when he could safely take what he liked."

No surprise, the same goes for earthly power:

Being in a position of power also may make people feel that they can do no wrong. In recent experiments, Dana Carney, a psychologist at Columbia University's business school, has found that acquiring power makes people more comfortable committing acts they might otherwise be reluctant to commit, like lying or cheating. As people rise to a position of power, she has shown, their bodies generate more testosterone, a hormone associated with aggression and risk-taking, and less cortisol, a chemical that the body generates in response to stress.