"Michael Servetus is one of those hidden figureheads of history who is remembered not for his name but for the revolutionary deeds that stand in his place. Both a scientist and a freethinking theologian, Servetus is credited with the discovery of pulmonary circulation in the human body as well as the authorship of a polemical masterpiece that cost Servetus his life. The Christianismi Restitutio, a heretical work of biblical scholarship written in...