In Spring 2012 a series of lectures was held at the Faculty of Law of the University of Trieste, focusing on selected relevant aspects related to the various legal subjects that are normally taught in the ordinary courses of our Faculty (Constitutional Law, History of Law, European and Comparative Law, Private International Law, Italian Private Law, Criminal Law). The lectures were mostly given in foreign languages by Italian and foreign colleagues, in particular young academics. Later it was decided to collect and publish some of the lectures in a volume: Sources of Law and Legal Protection. Triestine Lectures, adding a limited number of contributions delivered at two different conferences. This volume will be the first of a series designed to collect teaching materials, mostly in English and German, to be distributed in the academia. The internationalization and globalization pose a challange to law: also university education should strive to master it. The contributions reveal a clear scientific approach in dealing with the various subjects. The purpose of this book is to create a channel for the circulation of writings by young academics. Therefore it was considered appropriate to establish a scientific committee of external referees, as a means to guarantee the high quality of the individual contributions.