“Wherever there are Christians, everyone should find an oasis of mercy.” —Pope Francis Whether dealing with adoption, sobriety, bullying, the Boston Marathon bombing, or friendship with a Jehovah’s Witness, Mathew Schmalz’s own life serves as the backdrop for his reflections on the complex nature of mercy—how we give it, and how we receive it. From a home for lepers in India to a halfway house in the Bronx, the author probes his experiences to reveal mercy as a virtue that doesn’t necessarily...