The Eucharistic celebration is 'the center of the Christian community, ' 'the source and summit of the Christian life, ' or further, 'the center and culmination of the entire life of the Christian community.' Root, source, center, summit: the Eucharistic celebration is at the heart of our faith and our life. To study it is to look at its own heart. That is where we meet Jesus Christ, present in his Word, present in the Eucharist, present in the...