Who can distinguish darkness from the soul

[~¤Akash¤~]

My Soul. I summon to the winding ancient stair;
Set all your mind upon the steep ascent,
Upon the broken, crumbling battlement,
Upon the breathless starlit air,
"Upon the star that marks the hidden pole;
Fix every wandering thought upon
That quarter where all thought is done:
Who can distinguish darkness from the soul

William Butler Yeats