Original: The Ninety-Five Theses on the Power and Efficacy of Indulgences ( ) , commonly known as The Ninety-Five Theses , were written by Martin Luther in 1517 and are widely regarded as the primary catalyst for the Protestant Reformation .
Simplified: The Ninety-Five Theses on the Power of Indulgences , commonly known as The Ninety-Five Theses , was written by Martin Luther .