Freedom is not from but for something other than ourselves. This makes the [Trinitarian] Person ecstatic, i.e., going outside and beyond the boundaries of the “self.” But this ecstasis is not to be understood as a movement towards the unknown and the infinite; it is a movement of affirmation of the other.
This drive of personhood towards the affirmation of the other is so strong that it is not limited to the “other” that already exists, but wants to affirm an “other” which is the totally free grace of the person. Just as God created the world totally as free grace, so the person wants to create its own “other”… [A person is] a creator that brings about a totally other identity as an act of freedom and communion.
John Zizioulas, “Communion and Otherness,” St. Vladimir’s Theological Quarterly