BACKGROUND: The Rig-Veda is a collection of sacred hymns; it is among the oldest examples of Sanskrit literature and of Hindu religious texts. The name comes from the Sanskrit words rg (praise) and veda (knowledge). The Rig-Veda is one of the four canonical Hindu texts, each of which has a specific religious and social function. Sections of these Vedas are still recited as prayers, an indication of long cultural continuities that survived the processes of political change. For at least a millennium, the Vedas survived only orally, with specific formulas, performance, and mnemonic markers serving to maintain remarkable continuity. The Rig-Veda is organized into 10 mandalas (books) of varying lengths and purposes. The following selection tells a story of creation through sacrifice.