social Trinitarian, as his theology emphasises the unity of God's will, and he clearly believes that the identities of the Trinity are the three persons, not the relations between them. Infinitude of God Gregory was one of the first theologians to argue, in opposition to Origen, that God is infinite. His main argument for the infinity of God, found in Against Eunomius, is that God's goodness is limitless, and as God's goodness is essential, God is also limitless. An important consequence of Gregory's belief in the infinity of God is his belief that God, as limitless, is essentially incomprehensible to the limited minds of created beings. In Life of Moses, Gregory writes: "...every concept that comes from some comprehensible image, by an approximate understanding and by guessing at the Divine nature, constitutes an idol of God and does not proclaim God." Gregory's theology was thus apophatic: he proposed that God should be defined in terms of what we know He is not rather than what we might speculate Him to be. Accordingly, the Nyssen taught that due to God's infinitude, a created being can never reach an understanding of God, and thus for man in both life and the afterlife there is a constant progression [ἐπέκτασις] towards the unreachable knowledge of God, as the individual continually transcends all which has been reached before. In the Life of Moses, Gregory speaks of three stages of this spiritual growth: initial darkness of ignorance, then spiritual illumination, and finally a darkness of the mind in mystic contemplation of the God who cannot be comprehended. Universalism Gregory seems to have believed in the universal salvation of all human beings. Gregory argues that when Paul says that God will be "all in all" (1 Cor. 15:28), this means that though some may need to undergo a long period of purification, eventually "no being will remain outside the number of the saved" and that "no being created by God will fall outside the Kingdom of God". Due to the unity of human nature in Christ "all, thanks to the union with one another, will be joined in communion with the Good, in Jesus Christ Our Lord". By his incarnation, death and resurrection Christ achieves "the common salvation of human nature". Gregory also described God's work this way: "His [God's] end is one, and one only; it is this: when the complete whole of our race shall