Multilingualism constitutes one of the essential components of the contemporary society. Europe offers us today a new cultural pattern, in which cultures whole preserving their identity, contribute at the same time to forming a European culture; its variety meaning richness, in contrast with opposition or exclusion. The subject of the present paper implies also a distinction between multilingualism and plurilingualism. The first concept relates to a geographical zone in which there exists linguistic diversity, i.e. in which several languages or varieties of one and the same language are spoken, while the second one implies the ability of an individual to make use of several languages, besides his mother tongue, a phenomenon opposed to that of monolingualism.