Bump Heads with the Roof

"How can I grow and reach my full height?"
a tree once said to me.

And I replied,
"Dear, sit quiet for a minute each day,
don't let your branches move,

conserve your energy within and without,
concentrate all your strength
on your invisible wings.

Then a fuel that feeds your actions and thoughts
will help your spirit
 to rise and bump heads with the Roof over all."

--Hafiz, from A Year with Hafiz