One cannot achieve peace without realizing justice, realize justice without seeking out the truth, seek out the truth without practicing freedom. So living and thinking free is the root of achieving peace in our world.
Give a truly good person power, and they’re still a good person. Give a bad person power, and they’re still a bad person. The question is always about the person in between. The one that isn’t evil, or good, but just ordinary. You don’t always know what an ordinary person is like on the inside.