Ethics is also responsible for determining what can be described as the sense of human existence, the deeper meaning of the ethical and existential life of the individual and the cosmos that includes it. This is also why it is customary to differentiate the terms 'ethics' and 'morality'. Another reason is that, although they are often used interchangeably, it is preferred to use the term 'moral' to indicate the association of values, norms and customs of an individual or a particular group of people. It is preferred to reserve the word 'ethics' to the rational intent (i.e. philosophical) to found the moral as a discipline not subjective.
The question posed by the meta-ethics on the justification of moral principles, is needed to unravel the tangle of motives and principles that are the foundation of the same moral conflict. The meta-ethics therefore wish to make a conceptual clarification in order to resize the claims camped by particular moral perspectives. It defines the scope of ethics with respect to the various expressions of the ethos.
The practical philosophy reacts against the claim of neutrality requested by analytical metaethics. In fact, while giving up its own scientific foundation, it can not, according to the practical philosophy, demand ethics the same rigor and the same accuracy that require mathematics. Demonstrations of mathematics are always valid, ethical ones are mostly. So, ethics is not a science for its own sake, but wants to direct the practice.
As to whether priority is good or just, there are several theories:
• ‘liberalism’ recognizes a certain autonomy of the just in respect to the good, so it is a must that action conforms to a right norm and it is necessary to choose based on the principles of justice. This theory sees its birth in Locke and Kant, and a recovery in the twentieth century, due to many authors, for example: John Rawls, Robert Nozick.
• to communitarianism, justice is not a matter of rules and procedures, but something that concerns people's behavior in relation to their peers; justice is a virtue of the person.
• Philosopher Charles Taylor, however, believes illusory to imagine that the ‘right’ can disregard the reference to the good. He sees, then, a primacy of the ‘good’ on the right, where for good is not intendent: profit, but "anything that stands out over the other things on the basis of a qualitative distinction." Morality is not only concerned with just obligations and public rules, but first with all qualitative distinctions.
• Axiology, or the study of the value or quality. The theory of values is mainly the nature of value and goodness in general.
Utilitarianism holds as the ultimate criterion of the principle of utility, so the moral purpose to be found in all we do is the ‘largest remaining possible of good over evil’. In this case we speak, obviously, of good and evil non-moral. There are three basic types of utilitarianism.
Utilitarianism of act. The basic principle is always that of the remaining balance of good over evil, and it becomes important to stress particularism, namely that the question to ask is what I should do in this particular situation and not what everyone should do in certain kinds of situations. So the remainder that is searched is referred immediately to the single subject and is not a remnant of the general good.
General utilitarianism. This is based on two fundamental characteristics:
• The basic principle of utilitarianism
• the principle of '' 'universalizability'.
Then while acting, each one must ask what would happen if everyone acted in such a cases. The idea behind general utilitarianism is related to the fact that, if it is right that a person in a certain situation makes a certain thing, then it is right that that action is made by any other person in similar situations
Utilitarianism of the rule. It highlights the centrality of rules and says that generally, if not always, we have to determine what to do in particular situations, appealing to the norms. It differs from ‘deontologism’ because it adds to this the fact that we always have to determine our policies wondering which standard will promote the greatest general good for all. So the whole issue, in the utilitarianism of the rule, revolves around the question: which standard is more useful to more people?
At the base of each conception of ethics is the notion of good and evil, of virtue and a certain vision of man and of human relationships. These ideas are often related to a particular religion, or at least to an ideology.