Quotes from John Zizioulas

In the Eucharist we can find all the dimensions of communion: God communicates himself to us, we enter into communion with him, the participants of the sacrament enter into communion with one another, and creation as a whole enters through man into communion with God. All this takes place in Christ and the Spirit, who brings the last days into history and offers to the world a foretaste of the Kingdom.

The question that preoccupied the Fathers was not to know if God existed or not - the existence of God was a "given" for nearly all men of this period, Christians or pagans. The question which tormented entire generations was rather: *how* he existed. And such a question had direct consequences as much for the Church as for man, since both were considered as 'images of God'.