Trinitarian Ontology

Are Communion and Otherness contradictory or can they be reconciled? In his book Jesmond Micallef refers to John Zizioulas's celebrated book Being as Communion to try to answer this question underlining the importance of communion for life and for unity. He explains that Communion and Otherness are not contradictory but complementary because Communion is the basis for true Otherness and identity.The author traces the work of Zizioulas who probes the Christian tradition and highlights the existential concerns that already underlay the writings of the Greek Fathers and the definitions of the early ecumenical councils.