Spirit as Wings

"One must manifest discipline of spirit;
without it one cannot become free. To the
slave discipline of spirit will be a prison;
to the liberated one it will be
a wondrous healing garden.
So long as the discipline of
spirit is as fetters the
doors are closed, for
in fetters one cannot
ascend the steps.
...
One may understand the
discipline of spirit
as wings."

- Nicholas Roerich (1874 - 1947)