St. Augustine helps us to understand the dynamics of holy Communion when referring to a kind of vision he had, in which Jesus said to him: "I am the food of the mature: grow, then, and you shall eat me. You will not change me into yourself like bodily food; but you will be changed into me"(Confessions, VII, 10, 18). Therefore, while the bodily food is assimilated by the body and contributes to sustain it, the Eucharist is a different bread: We do not assimilate it, but it assimilates us to itself, so that we become conformed to Jesus Christ and members of his body, one with him. This is a decisive passage. Indeed, precisely because it is Christ who, in Eucharistic communion, transforms us into him, our individuality, in this encounter, is opened up, freed from its self-centeredness and placed in the Person of Jesus, who in turn is immersed in the Trinitarian communion. Thus, while the Eucharist unites us to Christ, we open ourselves to others making us members one of another: We are no longer divided, but one thing in him. Eucharistic communion unites me to the person next to me, and to the one with whom perhaps I might not even have a good relationship, but also to my brothers and sisters who are far away, in every corner of the world. Thus the deep sense of social presence of the Church is derived from the Eucharist, as evidenced by the great social saints, who have always been great Eucharistic souls. Those who recognize Jesus in the Blessed Sacrament, recognize their brother who suffers, who is hungry and thirsty, who is a stranger, naked, sick, imprisoned, and they are attentive to every person, committing themselves, in a concrete way, to those who are in need.