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.
When we inhale, the air comes into the inner world. When we exhale, the air goes out to the outer world. The inner world is limitless, and the outer world is also limitless. We say "inner world" or "outer world" but actually, There is just one whole world.