Directive (EU) 2016/801 of the European Parliament and of the Council of 11 May 2016 on the conditions of entry and residence of third-country nationals for the purposes of research, studies, training, voluntary service, pupil exchange schemes or educa...

Preamble:
‘(7) Migration for the purposes set out in this Directive should promote the generation and acquisition of knowledge and skills. It constitutes a form of mutual enrichment for the migrants concerned, their country of origin and the Member State concerned, while strengthening cultural links and enhancing cultural diversity.‘