The Ninety-five Theses or Disputation on the Power and Efficacy of Indulgences is a list of propositions for an academic disputation written in 1517 by Martin Luther, then a professor of moral theology at the University of Wittenberg, Germany. The Theses are retrospectively considered to have launched the Protestant Reformation and the birth of Protestantism, despite various quasi- or proto-Protestant groups having existed previously. The Theses are framed as propositions to be argued in an academic debate rather than necessarily representing Luther's opinions.

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Key figuresMartin Luther