The Wealth of Nations by Part 5 Chapter 1 Page 217

exempted from the civil jurisdiction of the countries in which their respective universities were situated, and were amenable only to the ecclesiastical tribunals.

What was taught in the greater part of those universities was suitable to the end of their institution, either theology, or something that was merely preparatory to theology.

When Christianity was first established by law, a corrupted Latin had become the common language of all the western parts of Europe. The service of the church accordingly, and the translation of the Bible which was read in churches, were both in that corrupted Latin; that is, in the common language of the country. After the irruption of the barbarous nations who overturned the Roman empire, Latin gradually ceased to be the language of any part of Europe.