Edna St. Vincent Millay

Nuit Blanche

I am a shepherd of those sheep
   That climb a wall by night,
One after one, until I sleep,
   Or the black pane goes white.
Because of which I cannot see
   A flock upon a hill,
But doubts come tittering up to me
   That should by day be still.
And childish griefs I have outgrown
   Into my eyes are thrust,
Till my dull tears go dropping down
   Like lead into the dust.