Principles of Catholic Theology

Principles of Catholic Theology: Building Stones for a Fundamental Theology
Ignatius Press (April 1987)

A collection of articles and talks written around a central theme the fundamental structure of Christianity: Catholicism, the inter-relationship of other forms of Christianity, 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.