Let’s have a look at (Woman’s and) Man’s Supernatural Destiny.
16. Self-development, however, is not left up to (our) option. Just as the whole of creation is ordered toward its Creator, so too the rational creature should of (their) own accord direct (their) life to God, the first truth and the highest good. Thus human self-fulfillment may be said to sum up our obligations.
This has been expressed in other ways through the Christian era. Saint Augustine has one of the most lyrical ways of saying it: we are restless until we rest in God. We need God to find the fullness of our expression as human beings.
Moreover, this harmonious integration of our human nature, carried through by personal effort and responsible activity, is destined for a higher state of perfection. United with the life-giving Christ, (our) life is newly enhanced; it acquires a transcendent humanism which surpasses its nature and bestows new fullness of life. This is the highest goal of human self-fulfillment.
This encyclical letter is © Copyright – Libreria Editrice Vaticana, and can be found in its entirety at this link.