Light is emitted through energy

Entropy guarantees energy will one day run out

No matter how long light shines on a place, darkness is waiting to pounce as soon as the energy dies

The only thing faster than the speed of light is the speed of darkness

Darkness knows that the Light is a candle burning away and patience will see the heat death of the universe wrapped in Darkness. The end will see no Light. Whatever remains will wander alone, forever in the Dark.