Book excerpt: The Russian Church and the Papacy, edited by Father Ray Ryland, is an abridgement of Vladimir Soloviev's classic work, Russia and the Universal Church. This is a powerful defense of the papacy from Soloviev, a Russian Orthodox theologian who was committed to the cause of Christian unity and spent years attempting to convince his Orthodox brethren to reunite with Rome. Soloviev uses Scripture, history, and hardheaded logic to prove that the papacy is essential to Christian unity and truth, and without it the early Christian Church would have disintegrated into hundreds of competing sects.