Forgive Your Enemies But Never Forget

No verified primary source has been found for this quote. It is widely circulated online under Kennedy's name, but scholars and researchers have found no dated speech, letter, or document in which Kennedy actually said or wrote it. A Quora thread specifically questioning its authenticity notes that "almost every time" the source is traced, professionals conclude there is "no known date of the quote." It should be treated as apocryphal.