"The Eucharist is not only a particularly intense expression of the reality of the Church's life, but also in a sense its fountainhead. The Eucharist feeds and forms the Church: 'Because there is one bread, we who are many are one body, for we all partake of the one bread' (1 Cor 10:17, RSV). Because of this vital link with the sacrament of the Body and Blood of the Lord, the mystery of the Church is savored, proclaimed, and lived supremely in the Eucharist."