This books follow the traditional civilian doctrinal approach when writing about the substantive law of Contracts and Quasi-Contracts, presenting the many interwoven legal features of these concepts. The fundamental and controlling concepts are made easily accessible by their scope of application and identifiable through their specific and qualifying legal characteristics. Whenever necessary, the authors have enriched their analyses with a skillful use of civil law methodology and legal reasoning, particularly in the chapters covering "Cause," "Detrimental Reliance," "Damages," "Performance," "Management of Affairs," and "Enrichment Without Cause." Louisiana Law of Contracts and Quasi-Contracts, A Treatise provides the keys to unlocking the meaning of essential concepts of the Civil Code, placing at the disposal of the legal professions a resource that will provide assistance and support in resolving complex issues in the law of Obligations, Contracts, and Quasi-Contracts. This treatise can be used as a companion resource to both Louisiana Law of Obligations in General, a Treatise and Louisiana Law of Obligations, A Methodological and Comparative Perspective.