This lecture is devoted to the issue of the Slavs' origins and ancestral home. This issue is considered in terms of linguistics, anthropology and ethnography. Written sources are analysed, in particular De origine actibusque Getarum (The Origin and Deeds of the Getae) by Jordanes. Archaeology and archaeological cultures are laid special emphasis on. Then the Russian Primary Chronicle (Tale of Bygone Years) is discussed as a source of information about the Slavs' expansion.