Arthur Berriedale Keith, The Mythology of All Races/Volume 6 (1917)
“ Sūrya is constantly the actual solar element and is conceived in many forms, as a bird, a flying eagle, a mottled bull, the gem of the sky, the variegated stone set in the heaven. He is also the weapon of Mitra and Varuṇa, or the felloe of their car, or the car itself. He shines forth in the lap of the dawns and is the son of Aditi, and his father is Dyaus, even though many other gods are said to produce the sun. He triumphs over the darkness and the witches, drives away sickness and evil dreams, and prolongs life. ”
