Aquinas holds that justice renders to each their due (suum cuique), and that disproportionate punishment is an injustice even when inflicted by legitimate authority (ST II-II, Q.61).

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Reasons For

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Reason for

1.Legitimate authority derives moral force from serving the common good, which requires proportionate punishment to maintain public trust and order.
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2.Disproportionate punishment violates the dignity of the person punished by treating them as less than human, contradicting natural law.
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3.Justice as a virtue requires the agent to act rightly; excessive punishment corrupts the authority figure's character regardless of legitimacy.
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Reasons Against

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Reason against

1.Determining what is 'due' requires substantive value judgments that vary across cultures; no universal standard of proportionality exists objectively.
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2.Legitimate authority may sometimes need flexibility to impose severe penalties for serious crimes or emergencies; strict proportionality can be counterproductive.
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3.Aquinas's framework assumes a fixed natural law, but modern justice systems treat proportionality as a procedural constraint, not a metaphysical principle.
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Key Terms

Aquinas: Thomas Aquinas was a medieval Italian priest and philosopher (1225-1274) who became one of the most influential thinkers in Western history. He attempted to show that Christian faith and human reason are compatible, arguing that we can use logic and observation to understand God and the natural world. His ideas deeply shaped Catholic theology and continue to influence how religious and secular institutions think about ethics, knowledge, and the relationship between science and belief.
Justice(Utilitarian account of justice; contrasted with non-utility-based theories): A name for certain classes of moral rules which concern the essentials of human well-being more nearly than other rules for the guidance of life, carrying more absolute obligation.
ST II-II, Q.61(as a reference indicating where in Aquinas's writings this idea appears): A citation system for Aquinas's major work called the 'Summa Theologiae' (Summary of Theology)—this notation points to a specific section and question number where he discusses this topic.
disproportionate punishment(as the type of injustice Aquinas is concerned with): A penalty or consequence that is too severe compared to the wrongdoing—for example, getting expelled from school for being late to class.
legitimate authority(Normative theory of authority): A kind of entity capable of fulfilling a mediating role in practical reasoning, whose directives replace certain first-order reasons for action.
suum cuique(as Aquinas's definition of justice): A Latin phrase meaning 'to each their own' or 'giving each person their due'—the idea that fairness means giving people what they deserve or are entitled to.

Connections

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Eternal Conscious Torment1 linked Against an aspect of God1 linked

Aquinas's framework assumes a fixed natural law, but modern justice systems trea...Determining what is 'due' requires substantive value judgments that vary across ...

Details

Type: claim
Perspectives: 2 (1 for, 1 against)
Edits: 1 edit