Reconciling conflict laws by Legal principles: Case study: Iranian civil and criminal laws

Legal principles is one of the sources of law. Legal system need to principles so need rules to direct subjects and behaviors. But role of principle is not limited to filling gaps. Legal principles importance in interpretation of laws, specially conflict Laws. In common view, the Function of principles, is Unknown. So, lawyers only talk about rules of Reconciling laws: new law Abrogate prior law between two conflicting laws. Also, General Law usually derogate special one. Albeit, preferring a special law against general one has not presume rule; altogether general law might be closer to legal principles. So only by reasoning in any case we can say one Special law derogate general law tacitly or anterior law abrogate Posterior law. Because these rules of reconciling between conflicts laws, such as other rules of interpretation, aren’t decisive. Perhaps Ancient Law be concordant whit reasonable Factors so better than new one. Especially in respect of tow conflict section of one statute we cannot say Legislator has repealed one of them by another one. So the significant of legal principles clear to everyone. Only by reasoning in any case we can say one Special law derogate general law or general law abrogate Special one impliedly. Because these rules of Reconciling between conflicts laws, such as other rules of interpretation, aren’t decisive.so they may be justified by legal reasoning and legal principles.