Principles of Catholic Theology is a collection of articles and talks written around a central theme: the fundamental structure of Christianity. This volume discusses Catholicism, the inter-relationship of other forms of Christianity, and the features that distinguish Catholicism from other Christian theologies. Ratzinger outlines the fundamental principles of theology and the proper relationship of theology to church teaching and authority.
With the Logos Bible Software edition of Principles of Catholic Theology, you have an abundance of resources that offer applicable and insightful material for study. You can easily search the subject of Christian unity and access an assortment of useful resources and perspectives from a variety of pastors and theologians.