The work "Introduction to the Science of Law in Greece and Cyprus - University Lectures" refers to basic concepts of Legal Science and is full of information both from the perspective of Methodology and from that of the History of Law. The book is characterized by clarity and provides completeness to the undergraduate student regarding the subject of his studies. It deals with legal concepts and their analysis, such as those of the sources of law and its interpretation, the rule of law and its application, concepts that concern every branch of law.