29 Taking the heart seriously, then, has consequences for society as a whole. The Second Vatican Council teaches that, “every one of us needs a change of heart; we must set our gaze on the whole world and look to those tasks we can all perform together in order to bring about the betterment of our race”. For “the imbalances affecting the world today are in fact a symptom of a deeper imbalance rooted in the human heart”. In pondering the tragedies afflicting our world, the Council urges us to return to the heart. It explains that human beings “by their interior life, transcend the entire material universe; they experience this deep interiority when they enter into their own heart, where God, who probes the heart, awaits them, and where they decide their own destiny in the sight of God”.
Source: Dilexit Nos (Vatican.va)