From Pope St. John Paul II’s encyclical Veritatis Splendor (1993):
Rational reflection and daily experience demonstrate the weakness which marks man’s freedom. That freedom is real but limited: its absolute and unconditional origin is not in itself, but in the life within which it is situated and which represents for it, at one and the same time, both a limitation and a possibility. Human freedom belongs to us as creatures; it is a freedom which is given as a gift, one to be received like a seed and to be cultivated responsibly. It is an essential part of that creaturely image which is the basis of the dignity of the person. Within that freedom there is an echo of the primordial vocation whereby the Creator calls man to the true Good, and even more, through Christ’s Revelation, to become his friend and to share his own divine life. It is at once inalienable self-possession and openness to all that exists, in passing beyond self to knowledge and love of the other.138 Freedom then is rooted in the truth about man, and it is ultimately directed towards communion.
Reason and experience not only confirm the weakness of human freedom; they also confirm its tragic aspects. Man comes to realize that his freedom is in some mysterious way inclined to betray this openness to the True and the Good, and that all too often he actually prefers to choose finite, limited and ephemeral goods. What is more, within his errors and negative decisions, man glimpses the source of a deep rebellion, which leads him to reject the Truth and the Good in order to set himself up as an absolute principle unto himself: “You will be like God” (Gen 3:5). Consequently, freedom itself needs to be set free. It is Christ who sets it free: he “has set us free for freedom” (cf. Gal 5:1).
138 Cf. Second Vatican Ecumenical Council, Pastoral Constitution on the Church in the Modern World Gaudium et Spes, 24.
— Veritatis Splendor 86