Your not beautiful thats why your so beautiful

Shakespeare uses the same tone as Collins "Litany" because they both degrade their loved ones.  They both say how their is more beauty out there in the world than their beloved women, but you would think to say that they don't think anything else is more beautiful.  Although, in the end they describe that their really is nothing as beautiful than the lack their of the beauty that is so superficial to the common eye.