Is it possible to give any description of the religion the Aryans had in common before they developed it in different ways in their various lands? We can no longer, following Mr. Max Mueller, look to India to tell us what was the common Aryan religion. Indian religion, when we first become acquainted with it, has already grown into an elaborate priestly system, and is evidently at a much later stage of Aryan development than the rustic cults, with which we have a good deal of acquaintance, in various European lands. If, however, we cannot follow the great German scholar in this, we gladly use his words on another aspect of the subject, when he is showing the etymological identity of the chief god of the Aryan peoples. In his _Lectures on the Science of Language_, vol. ii. p. 468, he tells us that "Zeus, the most sacred name in Greek mythology, is the same word as Dyaus in Sanscrit, Jovis or Ju in Jupiter in Latin, Tiw in Anglo-Saxon, preserved in Tiwsdaeg, Tuesday, the day of the Eddic god Tyr; Zio in old High-German. "This word was framed," he says, "once and once only; it was not borrowed by the Greeks from the Hindus, nor by the Romans and Germans from the Greeks. It must have existed before the ancestors of those primeval races became separate in language and religion; before they left their common pastures to migrate to the right hand and to the left.... Here, then, in this venerable word, we may look for some of the earliest religious thoughts of our race."[5] [Footnote 5: See also Mr. Mueller's _Hibbert Lectures_, and his _Biographies of Words_.]