Consciously and with deliberate purpose, he can do two things that animals can only do unconsciously and instinctively. First, man is able to bless and praise God for the world. Man is best defined not as a “logical” but as a “eucharistic” animal. He does not merely live in the world, think about it and use it, but he is capable of seeing the world as God’s gift, as a sacrament of God’s presence and a means of communion with him. So he is able to offer the world back to God in thanksgiving: “Thine own from thine own we offer to thee, in all and for all” (The Liturgy of St John Chrysostom).