With humor and ease, Father Michael Gaitley, MIC, deftly unlocks the "one thing," the key to the Church's wisdom, and the greatest mystery of the Catholic faith: the Most Holy Trinity. Far from being a scholarly or academic read, The "One Thing" Is Three makes deep theology accessible to every-day Catholics. What's more, it makes even what's familiar or forgotten appear in a way that's new, exciting, and relevant. Thus, The "One Thing" is Three brings its readers a unique and powerful experience of the faith. It's the perfect book for the Year of Faith.

Praise for The 'One Thing' Is Three:

"This is the best example I have ever seen of 'the new evangelization' in the form of a book for contemporary Catholics. It covers just about everything, yet slowly and clearly. If you wonder what God is doing in the Church today to convert and convince the modern world, read this book."
- Peter Kreeft, Ph.D., Author, Catholic Christianity

"Fr. Gaitley has a holy passion not only to contemplate the truth and beauty of the Trinity but to communicate it, which he does here with practical wisdom and spiritual insight. Readers will gain a new understanding and appreciation of the mysteries of faith, based on what the Church teaches about the highest and holiest Mystery of all: 'The communion of the Holy Trinity is the source and criterion of truth in every relationship' (CCC, n. 2845). Both inspiring and illuminating, I highly recommend this book."
- Scott Hahn, Ph.D., Author, Rome Sweet Home

"Packed with deep theological insight, and while bursting with information, it writes from the heart and speaks to the heart in such a way that the reader is drawn into a greater realization about the nature, mission, and action of the Holy Trinity. I can think of no better timing than the Year of Faith for this book to be introduced. Fr. Gaitley has given us a great guide to help us in our knowledge and, therefore, our love for God the Father, God the Son, and God the Holy Spirit."
- Bishop Daniel R. Jenky, CSC, Bishop of Peoria, Ill.

"This book is written for everyone. The conversational tone has an appeal that invites the reader into the journey of life. I highly recommend this book for anyone who loves the Church and seeks a deeper understanding of her teachings. Filled with references to Vatican II and Pope John Paul II, this book will enrich your belief in God's plan of salvation."
- Bishop David Ricken, Diocese of Green Bay, Wis.

"This is a beautiful book of Catholic teaching with personal stories and practical instruction that can easily be applied to everyday life, especially in this Year of Faith."
- Teresa Tomeo, Author, Extreme Makeover

"Fr. Gaitley offers the perfect resource for all those who desire sanctity and wisdom but who are busy just trying to keep up with life's constant demands. Whether you're new to the faith or a cradle Catholic like me, this book will unlock the treasures of Catholicism in a way that's clear, concise, and compelling."
- Lisa M. Hendey, Founder, CatholicMom.com