Lipstein, K. Keywords: Legal principles | Private international law | Mots clefs: Principes de droit | Droit international privé | ABSTRACT K. Lipstein begins his course on the General Principles of Private International Law with a presentation on the nature and function of international law, and thus presents a history of private international law established in Rome. The author then examines the relationship between private international law and public international law, including private international law as an e…