Time to pull this one out again:
For the narcissist sees the world–both the past and the present–in his own image. Mature historical understanding teaches us to do the opposite: to go beyond our own image, to go beyond our brief life, and to go beyond the fleeting moment in human history into which we have been born. History educates (“leads outward” in the Latin) in the deepest sense. Of the subjects in the secular curriculum, it is the best at teaching those virtues once reserved for theology–humility in the face of our limited ability to know, and awe in the face of the expanse of history.
Sam Wineburg, Historical Thinking and Other Unnatural Acts.