Repugnance in civil law. What is the importance of good morals in a legal system?

Abstract

In this article, the concept of repugnance in Civil Law and its relationship with good customs is critically analyzed, addressing how these act as limits and sanctions against behaviors deemed immoral in specific historical, cultural, and legal contexts. 
Through a dogmatic, historical, and jurisprudential approach, the manifestations and applications of the concept of good customs in Peruvian and comparative legal systems are examined. Special emphasis is placed on its nature as an indeterminate legal concept, allowing its adaptability to diverse temporal and spatial circumstances. The findings highlight that good customs not only limit private autonomy but also reflect the predominant ethical values of a society, establishing themselves as an essential tool to ensure social cohesion and justice. Additionally, the study provides evidence of their role in regulating contracts, trademarks, and practices considered socially reprehensible, such as prostitution, pornography, or dwarf-tossing. Finally, it concludes that good customs are a dynamic and fundamental element in law, as they integrate social morality with legal norms, contributing to the preservation of human dignity and equity in legal relations.