UL Latvian Language Institute's mission towards Latvian language material is to identify and write down, to characterize scientifically and to theorize it in all its forms and uses. UL LLI’s scientific staff uninterruptedly collects Latvian language material and carries out long-term in-depths fundamental researches on Latvian language as a system (phonetics, morphology, syntax, lexis and stylistics) and on Latvian language in linguistic environment (onomastics, dialectology, ethno-linguistics, terminology and sociolinguistics), taking into account the multiple backgrounds of language contacts in different time periods, especially, language policy and governance in Latvia, and highlighting Latvian language as a cultural value as well as its nationwide importance as means of communication.