Effects of globalisation include the internationalisation of universities. In Europe, the Bologna process foresees a borderless European Higher Education Area. The purpose of this paper is to present a perspective on this situation as experienced at the University of Luxembourg, officially trilingual. Some students at the University are trilingual as a consequence of the official trilingualism of Luxembourg. Others also speak languages of migration such as Portuguese. Furthermore, the university attracts students from the whole European area, Asia, Africa and the Americas. We will first discuss general issues arising from learning and teaching a trilingual curriculum including: - the impact of a trilingual curriculum on learning processes and pedagogy. - the role played by migrants’ languages and by ‘strong’ standard languages such as French or English – often perceived as ‘the world language’. The second part of the presentation discusses how these issues can be researched in a specific case, the study of law at the University of Luxembourg. It might be argued e.g. that a specific body of law has to be studied in the language of its formulation. The presentation will illustrate beliefs on multilingualism with an excerpt of data collected within a study conducted at the University of Luxembourg.