For decades, Rosa Luxemburg has been cast in the bronze of revolutionary history: the uncompromising Marxist, the defiant anti-war activist, and the tragic martyr of the 1919 Berlin uprising. However, a new English translation of The Letters of Rosa Luxemburg—the most comprehensive collection to date—peels back the “mystique” to reveal a wittier, warmer, and far more complex human being than the history books often suggest.