Valuing diversity is one of the main goals of language education. This is both related to the education of learners of different nationalities and to the reasons for which languages are learned today, often determined by the need for social integration and to find employment. Language competences gain value through multilingualism, together with opportunities for intercultural communication. At the same time, language policies should be evaluated and renewed constantly. These issues are discussed in this volume, through contributions which take different languages into consideration and which are based on varied theoretical and conceptual frameworks, while pertaining to the fields of Applied Linguistics and Language Education.