Sách nói: Jurisprudence

"[This book] is written primarily for the use of those students of the law who are desirous of laying a scientific foundation for their legal education ; yet I hope that it will not be found destitute of interest by those lawyers whose academic studies lie behind them, but who have not wholly ceased to concern themselves with the theoretical and scientific aspects of the law. Further, a great part of what I have written is sufficiently free from the technicalities and details of the concrete legal system to serve the purposes of laymen" (From the preface)