"I am the light of the world.
Whoever follows me will never walk in darkness,
but will have the light of life."
John 8:12
Which, like the toad, ugly and venomous,
Wears yet a precious jewel in his head;
And this our life, exempt from public haunt,
Finds tongues in trees, books in the running brooks,
Sermons in stones, and good in every thing.
William Shakespeare
As You Like It 2.1