This work examines the evidence for a special relationship between Greek and Armenian within the Indo-European family. It contains studies of the methods used to assess interrelationships within language families; the comparative reconstruction of Proto-Indo-European; the interpretation of Greek and Armenian texts; and the developments of the Greek and Armenian languages. The work outlines the existing methods employed for assessing the relationships between languages in the same genetic family, and sets forward the principles on which such investigations should proceed. The following chapters examine specific agreements between Greek and Armenian, and assess their significance for the relationship between the two languages.