Illusion and Reality

If God wills it, plain as it is, after every delusion there is light. But I cannot think of delusion following light (awareness, knowledge, etc.), because after light there can be only light, more light or nothing. Why 'nothing'? As Imam al-Ghazali puts it, knowledge with no action is nothing. It's nothing. O Allah! Give me light (noor), give light to my eyes, give light to my tounge, to my ears; light to my right, to my left, light in front and behind me, give light to my qalb (heart). Give us the Light O our Generous Lord! Ameen.