The principles expressed in
Dictatus Papae are mostly those expressed by the
Gregorian Reform, which had been initiated by Gregory decades before he became pope. It does not mention key aspects of the reform movement such as the abolishing of the triple abuse of clerical marriage, lay investiture and simony. The axioms of the
Dictatus advance the strongest case for papal supremacy and infallibility. The axiom "That it may be permitted to him to depose emperors" qualified the early medieval balance of power embodied in the letter
Famuli vestrae pietatis of Pope Gelasius I to the Eastern Roman Emperor Anastasius (494), which outlined the separation and complementarity of spiritual and temporal powers -
auctoritas (spiritual)
and potestas or
imperium (temporal), the former being ultimately superior to the latter - under which the West had been ruled since
Merovingian times. "None of the conflicts of the years 1075 and following can be directly traced to opposition to it (though several of the claims made in it were also made by Gregory and his supporters during these conflicts)". Later medieval developments of the relationship between spiritual and secular power would come with
Pope Boniface VIII, who famously formulated the image of the two swords in the papal bull
Unam Sanctam (1302). While most of the principles of the
Dictatus Papae detail the powers of the papacy and infallibility of the Roman church, principle 9 dictates that "All princes shall kiss the feet of the Pope alone," and principle 10 states that "His [the pope's] name alone shall be spoken in the churches." ==Authorship==