This article is dedicated to a survey of comparative law in Roman law. As a whole, the general attitude of the Roman jurists to foreign laws is to be characterized as Rome-centered. They encountered their Roman legal problems with their own Roman legal instruments. When they had to deal with problems arising from various foreign contacts, they normally reached at Romanized solutions by interpreting foreign legal institutions and concepts in the Roman way as the practice of imperial rescripts shows. Only extremely few cases are known where they allowed priority in application to foreign laws over the Roman law. Sometimes they proceeded against foreign laws in view of the Roman boni mores or in respect of good policy. They, however, never fai...