This is the first biography in English of Johann Reuchlin (1455-1522), based upon the new critical edition of his correspondence. Reuchlin became most famous as the Catholic defender of Jewish books at the beginning of the 16th century, clarifying the Catholic Church's position toward the Jews. The book contributes to the celebration of the 50th anniversary of the Declaration on Relations with the Jews of the Second Vatican Council in 1965. Franz Posset, PhD, Dipl.-Theol., is internationally known as Catholic Luther scholar, specializing in the theology and history of the Renaissance and Reformation, author of Pater Bernhardus: Martin Luther and Bernard of Clairvaux (1999), The Front-Runner of the Catholic Reformation (on Johann von Staupitz) (2003), Renaissance Monks (2005), The Real Luther (2011), Marcus Marulus and the Biblia Latina of 1489 (2013), and a book in German, Unser Martin. Martin Luther aus der Sicht katholischer Sympathisanten (2015).