Proto-Indo-European mythology

Proto-Indo-European mythology is the body of myths and deities associated with the Proto-Indo-Europeans, speakers of the hypothesized Proto-Indo-European language. Although the mythological motifs are not directly attested – since Proto-Indo-European speakers lived in preliterate societies – scholars of comparative mythology have reconstructed details from inherited similarities found among Indo-European languages, based on the assumption that parts of the Proto-Indo-Europeans' original belief systems survived in the daughter traditions.

Quotes

 * The all-inclusiveness of the Vedic is all too apparent and quite remarkable.
 * N. D. Kazanas, "Indo-European deities and the Rgveda", Journal of Indo-European Studies, 29(3/4) (2001), pp. 257-294.