Pope Francis. Embodying his name sake St Francis of Assisi in the quest for peace and nonviolence in the world. And embodying the life and teachings of Christ in the Sermon of the Mount when he says "blessed are the peacemakers" and to "turn the other cheek". People also said Jesus himself and his teachings were unrealistic and yet he preached what he preached anyways. And as Vicar of  Christ for Roman Catholics it makes sense for Francis to embody the pacifism of Christianity's founder.