Enrichment is key to understanding the law of unjust enrichment and restitution. This book provides a comprehensive analysis of the concept of enrichment and its implications for restitutionary awards. The book argues that enrichment may be characterized as either factual or legal, and it explores the consequences of that distinction. In factual enrichment cases, the measure of enrichment is the objective value received. This is the basis of awards of money had and received, quantum meruit, quantum valebat, and money paid. In legal enrichment cases, the benefit is the acquisition of a...