Hans Urs von Balthasar (1905–1988) was a Swiss theologian widely regarded as one of the greatest theologians and spiritual writers of modern times. Named a cardinal by Pope John Paul II, he died shortly before being formally inducted into the College of Cardinals. He wrote over one hundred books, including Prayer, Heart of the World, Mary for Today, Love Alone Is Credible, Mysterium Paschale and his major multi-volume theological works: The Glory of the Lord, Theo-Drama and Theo-Logic.
Joseph Ratzinger (Pope Benedict XVI) is widely recognized as one of the most brilliant theologians and spiritual leaders of our age. As pope he authored the best-selling Jesus of Nazareth; and prior to his pontificate, he wrote many influential books that continue to remain important for the contemporary Church, such as Introduction to Christianity and The Spirit of the Liturgy.