Rainer Maria Rilke. Not his most famous Duineian Elegies or Sonnets to Orpheus but a little, short poem about loneliness.
I also have to admit, I really don't like* the English translation. I hope there's a better one because it does not do this poem a justice. I don't speak German but I heard it performed and the cadence and rhythm was just amazing. English version retains none of it.
