" After the Leipzig Disputation, Luther’s cornerstone becomes more firmly settled. “By scripture alone”—or in Latin, sola scriptura—becomes his rock. On this basis he will criticize whatever in Church teaching and practice contradicts God’s Word. On this basis he will reconstruct authentic Christian teaching and practice for the sake of laypeople, who have been sadly misled through no fault of their own. And on this basis he will become the unwitting progenitor of a revolution in Western Christianity—a revolution that will affect just about everything because of how religion is interconnected with the rest of life. "

― Brad S. Gregory , Rebel in the Ranks: Martin Luther, the Reformation, and the Conflicts That Continue to Shape Our World