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Here enters a question: Does the human individual exist to serve society (communism), or does society exist to serve the individual (liberalism)?
Communism and liberalism are two extremes. Between and above these extremes runs the golden middle way. The individual, in temporal matters, serves society; but in eternal things he rises above civil society, since he is a fellow citizen of the saints, a member of the household of God. In defense of his country the citizen must be willing even to shed his blood. But civil authority, on the otherhand, while its proximate goal is the well-being of society, has as its ultimate goal that eternal life which is the end of all human activity. Man’s active life, then, his lower and external life, is subordinated to society. But man’s contemplative life, his higher and internal life, transcends civil life.
Here we note the distinction between “individual” and “person.” The animal is an individual, but not a person. Man is both an individual and a person. Man, as an individual, is subordinated to society, whereas society is subordinated to man as a person. Thus in the spiritual order (as person) man is bound to provide first for himself, whereas in the temporal order (as individual) man is praiseworthy when he is generous in providing for his neighbor. Again, virginity excels matrimony, because divine values surpass human values. And private spiritual good stands higher than common civil good.
Here too lies the reason why the secrets of man’s heart are not really parts of the universe, and hence cannot naturally be known.
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Thus in the spiritual order (as person) man is bound to provide first for himself, whereas in the temporal order (as individual) man is praiseworthy when he is generous in providing for his neighbor. […] And private spiritual good stands higher than common civil good.
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Réginald Garrigou-Lagrange (Beatitude: A Commentary on St. Thomas' Theological Summa, Ia IIae qq. 1-54)