The cracks is how the light gets in.
I remember seeing this picture before and thinking it was a photo shop thing. Reading about how it is a real sculpture by Londoner Paige Bradley, which emerged out of an act of self vandalism, makes it so much more powerful as a metaphor for how we are as humans, both shadow and light.
http://paigebradley.com/news/seeing-the-brilliance-through-the-cracks/
Here is a poem I wrote on a similar theme, feeling into the source of our own brilliance and the beginning of a different kind of economy.
Breathe deep, feel skin crack.
Who are you, freed from
stories told by others?
"No good, lazy so and so.
Get up to no good you."
Parched skin and soul.
Drink now, through the cracks.
Fall in love with you.
You deserve your love.
"There is a crack in everything. That's how the light gets in." (Leonard Cohen, "Anthem")