2431. Definition of Equity.—In law, equity is any court system of extraordinary justice in which the standard is natural honesty as declared by the conscience of the judge or by a body of rules and procedures that supplement or override the usual rules and procedures where these are too narrow or limited. Thus, in England and in the United States courts of equity are those that take care of defined special cases for which there is no remedy in the usual or common law courts (Robinson, _Elementary Law_, Sec.348). But as here taken equity is a moral virtue, and is of two kinds, particular equity which pertains to particular justice (natural equity) and general equity which belongs to legal justice (legal equity).
(a) Natural equity is a moral virtue that inclines one not to insist unnecessarily on one’s strict or legal rights when to do so will be unpleasant or burdensome to others. It is exemplified in the acts of an employer who freely grants a bonus to deserving employees in addition to the wage promised, and of a creditor who grants an extension of time to a hard-pressed debtor. This virtue partakes of both charity and justice; of charity, since it tempers justice with mercy; of justice, since it is really identical with the virtue of affability or friendliness mentioned above (2421). Its obligation as an act of justice is not grave, since the debt is not of a rigorous kind.
(b) Legal equity is a moral virtue that inclines one to justice beyond the common laws, or it is a correction of the law in that wherein the law by reason of its universality is manifestly deficient. The law is said to be deficient here when its application in a particular case would be prejudicial to the supreme purpose of law (i.e., to the common good or to equal justice). Some precepts of the natural law (e.g., the prohibitions against lying and adultery) cannot be deficient in this way and need no supervising equity. But other precepts of natural law, according to some (e.g., the command that a deposit be returned to the depositor), and also precepts of positive law are found to be unsuitable in exceptional cases. The reason for this defect in a good law lies in the nature of the case; for these laws must be made in view of what happens in the majority of cases, and accordingly they are couched in general terms and permit of exceptions which the lawgiver himself would allow (see on Epieikeia, 411 sqq).
2432. The Greatness of Legal Equity.—(a) It is a distinct virtue, since it inclines the will to do good and avoid iniquity in a matter of special difficulty. It is not a transgression of law, since it upholds the spirit when the letter departs from the spirit, and prizes the lawgiver’s intention to do what is just and right above the lawgiver’s words.
(b) It is a subjective part of common justice, since all that is contained in the concept of justice belongs to equity. Thus, it differs from the potential and integral parts of justice so far treated in Articles 5 and 6.
(c) It pertains to the species, not of particular, but of general or legal justice; for equity extends to all the virtues and is concerned with the debt owed to the common good. Thus, _per se_ its obligation is grave (see 1721).
(d) It is the higher part of legal justice. Just as prudence has two parts—good judgment (_synesis_), which settles ordinary cases of morals according to the usual rules of conduct, and acute judgment (_gnome_), which passes on moral problems that are out of the ordinary run—so legal justice has two acts, a lower which applies the law to usual cases, and a higher (equity) which applies more remote principles (viz., that the common good be not injured, nor injustice done) where the immediate principles of the law are clearly inadequate. Thus, if a madman demands from a depositary the return of his revolver in order to commit murder, the letter of the law would uphold the madman, but equity would decide against him; if the enemy are attacking a city and one cannot repel them except by disregarding an ordinance of the city, the law would forbid one to transgress the ordinance, while equity would command one to transgress it.
(e) Equity is, therefore, the noblest act of strict justice. For legal justice is preferred to particular justice (1703, 1715), and equity is the superior act of legal justice. In will and intention the common good and justice must take precedence over laws and statutes at all times; but in act the supreme ends of law are served, except in extraordinary cases, by obedience to law.
2433. The Complements of Justice.—To each of the various virtues correspond certain complements, namely, Gifts of the Holy Ghost, Fruits of the Holy Ghost, and Beatitudes (see 159).
(a) The Gift that corresponds to justice is piety, for, like justice, piety is exercised towards another, and moreover piety is the completion of the virtue of religion, the highest development of justice. This Gift is defined as “an infused habit that renders the soul well disposed towards God as its kind Father, and makes it quickly responsive to the Holy Spirit when He moves it to acts of filial affection towards God.” As the virtue of piety is shown to earthly fathers, so the Gift of Piety is shown to the Father in heaven: “You have received the spirit of adoption of sons, in which we cry: Abba, Father” (Rom., viii. 15). Religion honors God as Lord, piety as Father; filial fear reveres His majesty, piety His lovingkindness. And as a child tenderly loves all that belongs to a good father, so piety makes the soul rejoice and be glad in the things of God, in the Saints, the Scriptures, the practices of religion, and the like.