The Religion of the Veda: The Ancient Religion of India (from Rig-Veda to Upanishads) c7.s1.17

c7.s1.17

This threefold division, in order to be consistent, would have to be carried on to the end, so as to include all the gods. As a matter of fact it is uncertain in many places, even when carried no farther. We are not so certain as are the Hindus that Indra, for instance, is a god of the mid-air,³ even though we must admire this, on the whole successful, appreciation of the place in nature that belongs to a goodly proportion of the chief gods.