At the heart of H.W. Brands’ dual biography of John Brown and Abraham Lincoln is the question: “How does a good man challenge a great evil?” This is a problem that continues to vex politicians, pundits, and activists from all across the political spectrum, and many of the responses have remained the same in the age of Trump as they were in the age of Lincoln. Brown and Lincoln have been put into dialogue by historians before, representing conflicting means of attaining the shared vision of a United States rid of slavery. Likewise, at different times in U.S. history, Brown’s and Lincoln’s approaches have drawn applause and criticism from different sides within American politics. Given the current political and racial climate, as well as the public infighting between the political parties and their bases, The Zealot and the Emancipator is an incredibly timely work.