Indigenous Aryans were inter-related, and the notion of biological race came to the forefront The "Aryan race," the presumed identity of Indo-European language speakers was prominent among such races, which was seen to be further subdivided into "European Aryans" and "Asian Aryans," each with their own homelands. Max Mueller, who translated the Rigveda during 1849–1874, postulated an original homeland for all Aryans in central Asia, from where a northern branch was believed to have migrated to Europe and a southern branch came to India and Iran. The Aryans were fair-complexioned Indo-European speakers who conquered the dark-skinned "dasas" of India. The upper castes,
The Presentation of Self in Everyday Life book, the German and consequently also the Czech translation used a fitting summary as the name of the book "We All Play-Act" (German: "Wir Alle Spielen Theater", Czech: "Všichni hrajeme divadlo"), apart from the names in other languages that usually translate the title literally. Another translation, which also builds on the leading theatrical theme, rather than the original title, is the Swedish title of the book "Jaget och Maskerna" which literally translates "The self and the masks - A study of everyday-life drama". Philosopher Helmut R. Wagner called "The Presentation of Self in Everyday Life" "by far" Goffman's best book