It is sometimes described as ""duty-" or "obligation-" or "rule-" based ethics, because rules "bind you to your duty". Deontological ethics is commonly contrasted to "consequentialism, "virtue ethics, and "pragmatic ethics. In this "terminology, action is more important than the consequences.
The term deontological was first used to describe the current, specialised definition by "C. D. Broad in his book, Five Types of Ethical Theory, which was published in 1930. Older usage of the term goes back to "Jeremy Bentham, who coined it in c. 1826 to mean more generally "the knowledge of what is right and proper". The more general sense of the word is retained in French, especially in the term code de déontologie ""ethical code", in the context of "professional ethics.
Depending on the system of deontological ethics under consideration, a moral obligation may arise from an external or internal source, such as a set of rules inherent to the universe ("ethical naturalism), "religious law, or a set of personal or cultural "values (any of which may be in conflict with personal desires).
Deontology is the study of that which is an "obligation or duty", and consequent moral judgment on the actor on whether he or she has complied.["citation needed] In philosophy and religion, states Bocheński, there is an important distinction between deontic and "epistemic authority. A typical example of epistemic authority, explains "Anna Brożek, is "the relation of a teacher to his students; a typical example of deontic authority is the relation between an employer and his employee". A teacher has epistemic authority when making declarative sentences that the student presumes is reliable knowledge and appropriate but feels no obligation to accept or obey; in contrast, an employer has deontic authority in the act of issuing an order that the employee is obliged to accept and obey regardless of its reliability or appropriateness.
There are numerous formulations of deontological ethics.
"Immanuel Kant's theory of ethics is considered deontological for several different reasons. First, Kant argues that to act in the morally right way, people must act from duty (deon). Second, Kant argued that it was not the consequences of actions that make them right or wrong but the motives of the person who carries out the action.
Kant's argument that to act in the morally right way one must act purely from duty begins with an argument that the highest good must be both good in itself and good without qualification. Something is "good in itself" when it is "intrinsically good, and "good without qualification", when the addition of that thing never makes a situation ethically worse. Kant then argues that those things that are usually thought to be good, such as "intelligence, perseverance and "pleasure, fail to be either intrinsically good or good without qualification. Pleasure, for example, appears not to be good without qualification, because when people take pleasure in watching someone suffer, this seems to make the situation ethically worse. He concludes that there is only one thing that is truly good:
Nothing in the world—indeed nothing even beyond the world—can possibly be conceived which could be called good without qualification except a good will.
Kant then argues that the consequences of an act of willing cannot be used to determine that the person has a good will; good consequences could arise by accident from an action that was motivated by a desire to cause harm to an innocent person, and bad consequences could arise from an action that was well-motivated. Instead, he claims, a person has a good will when he 'acts out of respect for the moral law'. People 'act out of respect for the moral law' when they act in some way because they have a duty to do so. So, the only thing that is truly good in itself is a good will, and a good will is only good when the willer chooses to do something because it is that person's duty, i.e. out of "respect" for the law. He defines respect as "the concept of a worth which thwarts my self-love".
Kant's three significant formulations of the "categorical imperative are:
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Some deontologists are "moral absolutists, believing that certain actions are absolutely right or wrong, regardless of the intentions of the moral agent or the resultant consequences. "Immanuel Kant, for example, argued that the only absolutely good thing is a good will, and so the single determining factor of whether an action is morally right is the will, or motive of the person doing it. If they are acting on a bad maxim, e.g. "I will lie", then their action is wrong, even if some good consequences come of it.
Although not all deontologists are religious, some believe in the 'divine command theory', which is actually a cluster of related theories which essentially state that an action is right if God has decreed that it is right. According to "Ralph Cudworth, an English philosopher, "William of Ockham, "René Descartes, and eighteenth-century "Calvinists all accepted various versions of this moral theory, as they all held that moral obligations arise from God's commands. The Divine Command Theory is a form of deontology because, according to it, the rightness of any action depends upon that action being performed because it is a duty, not because of any good consequences arising from that action. If God commands people not to work on "Sabbath, then people act rightly if they do not work on Sabbath because God has commanded that they do not do so. If they do not work on Sabbath because they are lazy, then their action is not truly speaking "right", even though the actual physical action performed is the same. If God commands not to covet a neighbour's goods, this theory holds that it would be immoral to do so, even if coveting provides the beneficial outcome of a drive to succeed or do well.
One thing that clearly distinguishes Kantian deontologism from divine command deontology is that Kantianism maintains that man, as a rational being, makes the moral law universal, whereas divine command maintains that God makes the moral law universal.
Frances Kamm's "Principle of Permissible Harm" is an effort to derive a deontological constraint which coheres with our considered case judgments while also relying heavily on Kant's "categorical imperative. The Principle states that one may harm in order to save more if and only if the harm is an effect or an aspect of the greater good itself. This principle is meant to address what Kamm feels are most people's considered case judgments, many of which involve deontological intuitions. For instance, Kamm argues that we believe it would be impermissible to kill one person to harvest his organs in order to save the lives of five others. Yet, we think it is morally permissible to divert a "runaway trolley that would otherwise kill five "innocent and immobile "people onto a side track where one "innocent and immobile "person will be killed. Kamm believes the Principle of Permissible Harm explains the moral difference between these and other cases, and more importantly expresses a constraint telling us exactly when we may not act to bring about good ends—such as in the organ harvesting case. In 2007, Kamm published a book that presents new theory that incorporates aspects of her "Principle of Permissible Harm", the "Doctrine of Productive Purity". Like the "Principle of Permissible Harm", the "Doctrine of Productive Purity" is an attempt to provide a deontological prescription for determining the circumstances in which people are permitted to act in a way that harms others.
Attempts have been made to reconcile deontology with virtue-based ethics and "consequentialism. "Iain King's 2008 book "How to Make Good Decisions and Be Right All the Time uses "quasi-realism and a modified form of "utilitarianism to develop deontological principles which are compatible with ethics based on "virtues and consequences. King develops a hierarchy of principles to link his meta-ethics, which are more inclined towards consequentialism, with the deontological conclusions he presents in his book.