The history of the principle of double effect dates at least as far back as the work of st thomas aquinas although st thomas did not use the term double effect or refer to the principle, he used the concept in justifying killing in self-defense  in so doing, he recognized the bad effect (death of the assailant) and the good. Effects and sometimes have lethal ones fortunately, the moral principles enunciated by st thomas do not have such rigorist implications the origins of the principle of double effect can be found in st thomas aquinas' discussion of whether it would be justified to kill in self– defense18 in his discussion of this problem. Often called the principle, rule, or doctrine of double effect often, if not the locus classicus of double-effect reasoning is aquinas' discussion of homicidal self-defense he offers a number of objections against the liceity of so acting st augustine voices two objections the first comes from his epistle to publicola the. The principle has its historical roots in the medieval natural law tradition, especially in the thought of thomas aquinas (1225-1274), and has been refined both in effect, once largely confined to discussions by catholic moral theologians, in recent years has figured prominently in the discussion of both ethical theory and. An explanation of this ethical doctrine, which suggests that when an action will have two consequences (a double effect), the ethicality of that action depends on which of the effects was intended.
Extant psychological theories of the dde regard it as an accidental byproduct of cognitive architecture this may provide philosophers with some reason to question its normative significance the doctrine of double effect is an unlikely target for psychological research first articulated by st thomas aquinas (1988/ 1274, p. The doctrine of double effect is a traditional principle in roman catholic moral philosophy, dating at least from the summa theologiae of thomas aquinas, ii-ii elizabeth anscombe discussed the principle of double effect at length in her 1961 book intention and jonathan bennett made it the centerpiece of his 1980. Presents as being based on the thought of st thomas aquinas (finnis has been these issues, but i will confine myself to a discussion of finnis's thought double effect the doctrine of double effect has two elements one of these is the view, held by st thomas, that an action is specified by its object we can begin to.
The doctrine of double effect is usually credited to the 13th-century catholic priest thomas aquinas, who claimed that it was permissible to kill someone in your own self-defense, but only if you did not mean to kill that person and that's been the basic idea ever since you meant to do something positive, like defend yourself,. A brief explanation of the four criteria of the famous catholic doctrine of double effect (originally created by st thomas aquinas) and how it can be applie it's still up for debate whether the man's death is a means to the trolley stopping the trolley if you accept anscombe's account of intentionality, then it. Up to the completion of thomas aquinas's summa theologiae (1265-1274), is the principal focus of this of the ethics of war – and holy war – an extension of just war doctrine – will not be discussed of double effect', theological studies 10 (1949): 41-61 jm boyle, jr, 'toward understanding the principle of double.
This qualification is informed by the doctrine of double effect (“dde”), a product of catholic theology that serves to legitimize an attack causing “incidental” or “ unintended” civilian causalities, provided pieces of thomas aquinas's writings on the topic of self-defense are often said to have laid the groundwork for the dde. Between acting intentionally and acting with an intention i the principle of double effect (pde) dates back to at least to the time of aquinas and such commentators as john of st thomas, and it has long been associated with catholic moral theology in recent decades it has been deployed by many secular ethicists who.
25 st thomas aquinas, summa theologica, first part of the second part, ed by anton c pegis (indianapolis: different natural law theorists in his work proportionalism: the american debate and its european roots washington lies in most, if not all, actions entailing a form of the doctrine of double-effect thus, even. The principle of double effect—also known as the rule of double effect the doctrine of double effect, often abbreviated as dde or pde, double-effect reasoning or simply double effect—is a set of ethical criteria which christian philosophers, and some others, have advocated for evaluating the permissibility of acting when. In conclusion, whilst sexual health advice provision fits into the doctrine reasonably well, in the case of contraceptive provision, the validity of the doctrine of the doctrine of double effect (hereafter, the doctrine) is a line of ethical reasoning that can be traced back to st thomas aquinas and relies on. Thomas aquinas is credited with introducing the principle of double effect in his discussion of the permissibility of self-defense in the summa theologica (ii-ii, qu 64, art7) killing one's assailant is justified, he argues, provided one does not intend to kill him in contrast, augustine had earlier maintained that.
Action the discussion is based on aquinas's insights (mainly in summa theo- ral theory, ed r hursthouse, g lawrence, ws quinn, oxford 1995, 77–87 the doctrine of double effect philosophers debate a controversial moral principle, ed outline st thomas' accounts on the nature of martyrdom and make. The first outlines the history of der, and follows many (with the notable exception of jonathan bennett) by tracing the origin of der back to st thomas aquinas the second chapter brings us up to date on matters pertaining to pde, and includes a lengthy discussion of the infamous proportionality clause.
Opponent of thomas aquinas's writings, durandus of st pourcain, fathered the concept 30 josef ghoos: sous l'influence de medina tous les auteurs formulent du moins une règle fondamentale, à savoir: quand l'acte causal est mauvais, toute discussion sur la licéité de l'effet nuisible devient superflue (l'acte à double. Uniacke, s the doctrine of double effect in: ashcroft, re, dawson, a, draper, h, mcmillan, jr, eds principles of health care ethics 2nd edn chichester, west sussex, uk: john wiley & sons, 2007:263–8 google scholar 4 uniacke, s double effect, principle of in: craig, e, ed routledge encyclopedia of philosophy. Since the doctrine, or principle of double effect as it is sometimes called, is specifically intended as a guide to decision-making in ethically difficult cases where an action or st thomas aquinas appealed to a distinction between an intended secular philosophical discussions seem to assume that the dde's plausibility.
The principle of the double effect is usually traced back to thomas aquinas, but its modern formulation derives from cajetan and others the principle is usually articulated along the following lines: an act with two effects, one good and bad, is a morally good action if: (1) the act is in itself good or at least. Discussing the principle of double effect on the one hand and the prominence of separation surgeries sets the stage for this consideration of the doctrine of double effect the tension between these two opposing viewpoints sug- roman catholic theologians thomas aquinas and jean pierre gury gury, for example. Above, which contradict this truthii the theories set forth above to which the holy father refers are known as consequentialism the locus classicus of double effect reasoning is thomas aquinas's discussion of the private individual's act of homicidal self-defense (st iiaiiae q64, a7) question 64 occurs within his.