Pope Francis appears to be changing the face of Roman Catholicism. He has infused what some consider a staid institution with openness and optimism. He has faced off against established power interests within the Vatican. He has reformed the Church's finances. And, most importantly, he has asked that Catholics approach one another and non-Catholics with candor, humility, and love. He has made the papacy and the Church relevant once again.

A pope of the people, Pope Francis' teachings have been praised and shared by the faithful and nonreligious alike. Exploring themes such as faith and...