Morality is a set of rules by which men distinguish the good from the bad. The science of these rules is the Ethics. Moral norms vary with religious beliefs and governing societies where, despite their diversity, some of them have been universalized. For example, almost all companies agree in condemning the murder or theft, and to extol the performance of the duties of family assistance. Individuals learn the moral principles in the context of the family, through religion and also in school. Moral concepts are presented using the so-called value judgments. These judgments relate to the "ought" and not "being" and therefore can not say that they are true or false. For example, the view according to which "should not be lying," we can not say whether or not real. Simply, it accepts or rejects it.
Many times, the value judgments of morality are the basis of legal norms. But the latter are different from the first in which are associated with a penalty. That is, one who commits a crime (ie, that violates a rule of law) is punishable by, for example, jail or a fine. This distinction was introduced by Hans Kelsen in his Pure Theory of law.