This is the title of a remarkable book by Karl Adam, published in 1935, a book that played a major role in the education of Pope Benedict XVI.
I would highly recommend it being added to your library for its clarity.
“The Church’s doctrine of justification is based upon the presupposition that man is not only called to a natural end, to the fulfillment of his natural being, to the development of his natural powers and aptitudes, but also beyond that, to a supernatural elevation of his being which entirely surpasses all created aptitudes and powers, to sonship with God, to participation in the divine life itself. Such is the central fact of the glad tidings of Christianity: “To as many as received him, to them he gave the power to become the sons of God” (John 1:12)”
Adam, K. (1935). The Spirit of Catholicism, New York: MacMillan Company. (pp.204-205)