It’s hard to describe our Rwandan trip leader, Eugene. He’s got a smile that, I swear, could light up the entire city of Boston, and a deep, sly giggle that is, quite possibly, the most beautiful sound I’ve ever heard. His story includes a traumatic, miraculous childhood, a revolutionary adolescence, and a yet-to-be-defined adulthood with immense potential. Eugene’s wife, Joy, has a similar story. She is beautiful, inside and out, and the few minutes I spent with her left me feeling encouraged beyond belief.