DEEPWALI which literally means :ROW OF LIGHTS; darkest night; enlightens the darkness of unrigteousness'of evil' ignorance of sin etc ;the world enlightened itself into wisdom; knowledge by lighting lamps symbolise illumination of mind "TAMSO MA JYOTIRGAMYA"god is light for the light is symbol of spritual illuminationand lord krishna menifest light equal to 10'000suns* BE LAMP YOURSELF*