Thomas Aquinas and Siger de Brabant were enemies in the famous debate, yet Dante Alighieri arranges their meeting in the Heaven. This arrangement may suggest Dante's adoption of Siger's point of view about philosophy's separation from theology as the bedrock of his own political idea of the separation of church and state. However, Dante's idea of the separation is not simply one's break away from the other. Instead, he makes the separated parts united again on a new base, a new type of relationship between church and state, on which "doppio lume" are twinned, meaning that the dialectic relationship personalized in the Roman emperor Justine I. Dante's dramatic arrangement is a hint of a new way out for the human politics.
