Joseph Ratzinger

About the Author

Cardinal Joseph Ratzinger was the Prefect of the Congregation for the Doctrine of the Faith under the late Pope John Paul II, and has long been regarded as one of the most profound Catholic theological and spiritual writers of our times. His numerous books include God and the World, Introduction to Christianity, Salt of the Earth, and The Spirit of Liturgy.

Marcello Pera, a professor of the philosophy of science at the University of Pisa, is also President of the Italian Senate. He lives in Italy.