"The Devas and Asuras, Angels and Titans, powers of Light and powers of Darkness in Rigveda, although distinct and opposite in operation, are in essence consubstantial, their distinction being a matter not of essence but of orientation, revolution or transformation. In this case, the Titan is potentially an Angel, the Angel still by nature a Titan; the Darkness in actu is Light, the Light in potentia Darkness; whence the designations Asura and Deva may be applied to one and the same Person according to the mode of operation, as in Rigveda 1.163.3, "Trita art thou (Agni) by interior operation".

Ananda Coomaraswamy