kansas. as a child i lived in indonesia. i have family whose gene pool stretches from ireland to china. i have lifelong friends who come from every corner of the world. and that background helps explain my core belief in the oneness of humanity. a belief in the god-given dignity and worth of all people and the underlying bonds that we share. it's why i believe america's diversity is a strength, not a weakness. the only way we can solve our biggest challenges from climate change to economic inequality is if we recognize those common bonds and learn to work together across divides of race and religion and language and culture. but as strongly as i hold to that belief, chicago taught me that change doesn't start on a global scale. change starts one person at a