This book offers a general framework for understanding the main concepts, rules, and institutions of the Thai legal system. It details the history of the civil and commercial code and provides readers with valuable information about the main principles that regulate relations between private individuals. Written in a clear and easy-to-understand style, it first presents the general principles of law and then addresses more specific aspects. It not only defines private law, but also explores how it works, and why it works the way it does. Topics covered include general rules of law, the law of obligations and contracts, the management of affairs without mandate and unjustified benefits, the law of property, family law and the law of inheritance.