Vac
Speech personified as a goddess in the Veda. In Rigveda 10.125 she speaks in her own voice: she walks with all the gods, holds up Mitra, Varuna, Indra and Agni, calls herself the Queen, and makes a seer of the one she loves. Rigveda 10.71 tells how the first seers found her; 1.164.45 says she has four parts of which people speak one. In the Brahmanas she is sent to the Gandharvas as the price of Soma, hides in the waters and trees, becomes a lioness, and loses a dispute with Mind. The Brahmanas identify Sarasvati with her, and in later Hinduism she survives as Saraswati's name Vagdevi.
Sources: Hymns of the Rigveda, tr. R. T. H. Griffith (1896), hymns read for the Vedic layer; The Satapatha-Brahmana, tr. Julius Eggeling (Sacred Books of the East 12, 41); The Veda of the Black Yajus School (Taittiriya Sanhita), tr. A. B. Keith (1914); Vedic Mythology, A. A. Macdonell (1897) · see Vac's web