"Contemplating is receiving." (St. John of the Cross) What we receive in prayer is the Spirit, who makes all creation new, moment by moment. It is the Spirit who rebirths us within the caves of our hearts. The case is a metaphor for this silent withdrawal, this going away to be alone, to listen, to gestate the Spirit, to rebirth ourselves. The reborn self is the child of wisdom born in solitude.
Once you start to see through the myth of status, possessions, and unlimited
consumption as a path to happiness, you'll find that you have all kinds of freedom
and time. It's like a deal you can make with the universe: I'll give up greed for
freedom. Then you can start putting your time to good use.
~ from NOTHING TO LOSE BUT OUR ILLUSIONS by David Edwards