Arthur Berriedale Keith, The Mythology of All Races/Volume 6 (1917)
“ So Vāyu is often linked with Indra, being, like him, a great drinker of soma, but Vāta is associated only with Parjanya, who is, like himself, a god of little but nature. Vāyu, the son-in-law of Tvaṣṭṛ, is swift of thought and thousand-eyed; he has a team of ninety-nine or even a thousand horses to draw his car; he drinks the clear soma and is connected with the nectar-yielding cow. Vāta rushes on whirling up the dust; he never rests; the place of his birth is unknown; man hears his roaring, but cannot see his form. He is the breath of the gods ”
