Catholic Liturgy: Its Fundamental Principles is a book written by Gaspar Lefebvre that provides a comprehensive overview of the principles behind the Catholic liturgy. The book delves into the history of the liturgy, its development over time, and the various forms it has taken throughout the centuries. Lefebvre also examines the theological and spiritual significance of the liturgy, and its role in the life of the Church and the faithful. The book covers topics such as the liturgical year, the sacraments, the Mass, and the various liturgical rites and traditions. Lefebvre's writing is clear and accessible, making the book an excellent resource for anyone seeking a deeper understanding of the Catholic liturgy.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.