If we are capable of loving, it is because we are responding to God's love: God first loves us. Love becomes incarnate and comes to us in Jesus. The Holy Spirit is this love that is poured out in our hearts. Thus we are loving God by means of God; the Spirit enables us to share in the love with which the Father loves the Son and the Son the Father. Love casts us into the Trinitarian realms; the Trinitarian realms are those of love.
OLIVIER CLÉMENT The Roots of Christian Mysticism