I heard a story about Rabbi Shmuel Dishon. A gentile once complained to him what right do we have to consider ourselves chosen people? Rabbi Dishon asked him, do you know what we say about you? He didn’t.
He began to extoll the greatness of the human being, being created in the image of G-d, the purpose and focal point of the universe. The guy was stunned and exclaimed, “Wow, I never thought that way of myself!” Rabbi Dishon then said, “Nu, so why would you mind if we think of ourselves a little better?”