Living Within the Reality of Love

So to know the Holy Spirit is not to have some third object put before the eyes of our theological understanding but to live within the reality of an eternal divine witness to divine life as the gift of 'otherness'. As Father and Son show us that giving as perfect mutual 'investment' of life and love, so the generation of the Spirit constitutes the mutual gift as open to be given again: there is in God also a free, self-forgetting act of pointing to the free mutuality of Father and Son. The divine life is not taken up completely in a mutuality that is inaccessible to what is other than God. (Rowan Williams, discussing the trinitarian theology of Hans Urs von Balthasar.)