God and Satan

In the Bible God/Jesus is described as a light or beacon onto the world. I don't know why but I always like to think of religious things in a scientific way. Here is my thoughts on God and Satan in terms of Light.

if God = Light, Satan = Darkness
and Darkness = Absence of Light
then Satan = Absence of God
if God = Strength
and Weakness = Absence of Strength
then Satan = Weakness