Document Type : Research Paper



Deontological theories are better understood in contrast to cosequentialist theories and are commonly used in moral philos­ophy to refer to non-cosequentialist moral concep­tions. One of the most important implications of deontologism is that a person's behavior can be wrong even if it results in the best possible consequences. In deontological theories, the obligation derives from the nature of the action itself, but, in consequential theories, this obligation is out of the action and a posterior to that.  In action, for the deontologist, the preference is with agent’s intention and will, but, the cosequentialist considers only the results and consequences of action. In this article, we will explain and analyze both of deontological and cosequentialist theories. Then, we will examine the relation between these theories. Recent moral philosophy shows much interest in the problem of how deontological constraints are to be reconciled with Consequentialism.