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      My love is as a fever longing still,
      
      For that which longer nurseth the disease,
      
      Feeding on that which doth preserve the ill,
      
      Th' uncertain sickly appetite to please:
      
      My reason the physician to my love,
      
      Angry that his prescriptions are not kept
      
      Hath left me, and I desperate now approve,
      
      Desire is death, which physic did except.
      
      Past cure I am, now reason is past care,
      
      And frantic-mad with evermore unrest,
      
      My thoughts and my discourse as mad men's are,
      
      At random from the truth vainly expressed.
      
      For I have sworn thee fair, and thought thee bright,
      
      Who art as black as hell, as dark as night.