Introduction -- Part 4. Life and the Spirit -- I. Life, its ambiguities, and the quest for unambiguous life. The multidimensional unity of life ; The self-actualization of life and its ambiguities ; The quest for unambiguous life and the symbols of its anticipation -- II. The spiritual presence. The manifestation of the spiritual presence in the spirit of man ; The manifestion of the spiritual presence in historical mankind -- III. The divine Spirit and the ambiguities of life. The spiritual presence and the ambiguities of religion ; The spiritual presence and the ambiguities of culture ; The spiritual presence and the ambiguities of morality ; The healing power of the spiritual presence and the ambiguities of life in general -- IV. The Trinitarian symbols. The motives of the Trinitarian symbolism ; The Trinitarian dogma ; Reopening the Trinitarian problem -- Part 5. History and the kingdom of God -- I. History and the quest for the kingdom of God. Life and history ; The ambiguities of life under the historical dimension ; Interpretations of history and the quest for the kingdom of God -- II. The kingdom of God within history. The dynamics of history and the new being ; The kingdom of God and the churches ; The kingdom of God and world history -- III. The kingdom of God as the end of history. The end of history or eternal life ; The individual person and his eternal destiny ; The kingdom of God : time and eternity.