On this day in 1517:

Martin Luther Posts His 95 Theses

1. When our Lord and Master Jesus Christ said, ``Repent'' (Mt 4:17), he willed the entire life of believers to be one of repentance. 
2. This word cannot be understood as referring to the sacrament of penance, that is, confession and satisfaction, as administered by the clergy. 
3. Yet it does not mean solely inner repentance; such inner repentance is worthless unless it produces various outward mortification of the flesh. 
4. The penalty of sin remains as long as the hatred of self (that is, true inner repentance), namely till our entrance into the kingdom of heaven. 
5. The pope neither desires nor is able to remit any penalties except those imposed by his own authority or that of the canons.