The true Light, God Himself, is shining within us.
"God is shining in our hearts to let us know that His glory is seen in Jesus Christ."
2 Corinthians 4:6 (CEV)
The Quakers call Christ inside the Inner Light. He is a Light inside us that can't be extinguished, a Light that has already overcome all darkness. He is a Light that will always guide us from within and light our path all the way home. He is the Light of pure Love that has no darkness in Him - He is only kindness, friendliness, and goodness, with no trace of evil or wrath. This beautiful Light, Christ Himself, is there within, His face glowing with glorious radiance, shining forth and waiting for us to remember that He has been here with us all along, He loves us like noone else, and He will never ever leave us.
A Thought: I am filled with the Light of God, not any darkness.