Karl Rahner: Who Is Man?

“[Man] is a Christ-centred being, i.e. his being possesses an ontic and spiritual-personal capacity for communicating with Jesus Christ in whom God has forever made the countenance of a man his own and has opened the reality of man, with an unsurpassable finality, in the direction of God; only thus was the real possibility of a direct communication of all men with God established with finality. Hence we can only speak ultimately of God by engaging ... in anthropology; and ultimately any information about anthropology ... can be given only when we engage in theology about God and from God.”

Source: Karl Rahner, Theological Investigations II (London: Darton, Longman & Todd, 1963), pp. 240-41.