Acknowledged by theologians as one of the great masterpieces of the Reformation, Martin Luther's Bondage of the Will was also Luther's favorite work. Luther responds to Desiderius Erasmus' Diatribe on Free Will with the bluntness, genius, sarcasm, and spirituality that were as much a part of his writing as they were of his colorful personality. Luther writes lucidly on the themes of man's inability and God's ability, man's depravity and God's sovereignty. The crucial issue for Luther concerned what ability free will has, and to what degree it is subject to God's sovereignty. Luther's doctrine of salvation pivoted on this key issue. Is man able to save himself, or is his salvation completely a work of divine grace? This work will long remain among the great theological classics of Christian history. Bondage of the Will was first published in 1525, eight years after Luther penned his Ninety-Five Theses.