The Catholic University of America Press is proud to present the third volume in its Sayings of the Fathers of the Church series. Featuring esteemed scholars and writers compiling material from our acclaimed Fathers of the Church volumes, each title is devoted to select areas of theology. The inaugural volumes covered the Seven Deadly Sins and the Four Last Things, and now we turn to The Holy Mass. The documents of early Christianity are rich in mentions of the Mass and its component parts. Sometimes they’re detailed descriptions, sometimes quick allusions. In this volume Mike Aquilina, a popular author on early Christianity, takes readers step by step through the Mass, from the Sign of the Cross through the Dismissal, illuminating the way with the words of the Fathers. Along the way readers encounter familiar rites, words, and gestures, but also familiar complaints — about long homilies, bad singing, liturgical abuses, and distracted congregations. The Holy Mass is divided into chapters based on the parts of the Mass known to modern Catholics of the Roman Rite. The Mass did not follow this sequence through the entirety of the era of the Fathers. Gregory the Great moved the position of the Lord’s Prayer. There were geographic variants for the placement of the Sign of Peace. Some ancient liturgies lacked a specific penitential rite — though all the liturgies had a penitential dimension to their prayers. Mike Aquilina’s introduction provides historical context and describes the rich development of the liturgy through the Church’s first few centuries. A foreword by Thomas Weinandy, a member of the Vatican’s International Theological Commission, speaks of the relevance of this material for worshipers today.

The first complete translation into a modern language of a major authority on the medieval Christian liturgy.

Honorius Augustodunensis’s Jewel of the Soul (the Gemma animae) gleams as one of the most attractive liturgical commentaries from the twelfth century. A lively and effective teacher, Honorius strives to unveil the meaning behind the sacred texts, objects, music, and ritual of the Roman Mass and Divine Office for young initiates. Building on the allegorical approach pioneered in the Carolingian era by Amalar of Metz, he shows readers how their souls are beautified by the liturgy as gold is by a jewel. His flowing and comprehensive commentary gained widespread influence in Western Christendom and was an important source for later liturgical treatises. For the modern scholar this work remains key to understanding the medieval allegorical approach to worship and provides valuable documentation about how these offices were celebrated in the twelfth century. These volumes offer the first complete translation into a modern language of this foundational Latin text on Christian liturgy.

The first complete translation into a modern language of a major authority on the medieval Christian liturgy.

Honorius Augustodunensis’s Jewel of the Soul (the Gemma animae) gleams as one of the most attractive liturgical commentaries from the twelfth century. A lively and effective teacher, Honorius strives to unveil the meaning behind the sacred texts, objects, music, and ritual of the Roman Mass and Divine Office for young initiates. Building on the allegorical approach pioneered in the Carolingian era by Amalar of Metz, he shows readers how their souls are beautified by the liturgy as gold is by a jewel. His flowing and comprehensive commentary gained widespread influence in Western Christendom and was an important source for later liturgical treatises. For the modern scholar this work remains key to understanding the medieval allegorical approach to worship and provides valuable documentation about how these offices were celebrated in the twelfth century. These volumes offer the first complete translation into a modern language of this foundational Latin text on Christian liturgy.

Almost weightless and able to pass through the densest materials with ease, neutrinos seem to defy the laws of nature. But these mysterious particles may hold the key to our deepest questions about the universe, says physicist Heinrich Päs. In The Perfect Wave, Päs serves as our fluent, deeply knowledgeable guide to a particle world that tests the boundaries of space, time, and human knowledge.

The existence of the neutrino was first proposed in 1930, but decades passed before one was detected. Päs animates the philosophical and scientific developments that led to and have followed from this seminal discovery, ranging from familiar topics of relativity and quantum mechanics to more speculative theories about dark energy and supersymmetry. Many cutting-edge topics in neutrino research--conjectures about the origin of matter, extra-dimensional spacetime, and the possibility of time travel--remain unproven. But Päs describes the ambitious projects under way that may confirm them, including accelerator experiments at CERN and Fermilab, huge subterranean telescopes designed to detect high-energy neutrino radiation, and the Planck space observatory scheduled to investigate the role of neutrinos in cosmic evolution.

As Päs's history of the neutrino illustrates, what is now established fact often sounded wildly implausible and unnatural when first proposed. The radical side of physics is both an exciting and an essential part of scientific progress, and The Perfect Wave renders it accessible to the interested reader.