Passage from:
Make Your Bed
The munchkin boat crew had one American Indian, one African American, one Polish American, one Greek American, one Italian American, and two tough kids from the Midwest. They out-paddled, outran, and out-swam all the other boat crews. The big men in the other boat crews would always make good-natured fun of the tiny little flippers the munchkins put on their tiny little feet prior to every swim. But somehow these little guys, from every corner of the nation and the world, always had the last laugh, swimming faster than everyone and reaching the shore long before the rest of us. SEAL training was a great equalizer. Nothing mattered but your will to succeed; not your color, not your ethnic background, not your education, and not your social status.
If you want to change the world, measure a person by the size of their heart, not the size of their flippers.