Moral High Ground Meaning

(idiomatic) A position or point of view which is ethically superior or more reputable, in comparison to others which are under consideration.

Example: 2002 May 6, Robert Horn, "The Next Face-Off," Time:
  Her legitimacy (as the leader of the party that won the 1990 general election), integrity and stoic acceptance of house arrest enable her to occupy the moral high ground.