Ah, light...

"There is a crack, a crack, in everything. That’s how the light gets in." -Leonard Cohen
"May it be a light to you in dark places, when all other lights go out." -J.R.R. Tolkien
The light shines in the darkness, and the darkness has not overcome it. -John 1:5
"What is to give light must endure the burning." -Eleanor Roosevelt
"In order for the light to shine so brightly, the darkness must be present." -Sir Francis Bacon