Luther on the Papacy

Martin Luther wrote:

I am persuaded that if at this time, St Peter, in person, should preach all the articles of Holy Scripture, and only deny the popeís authority, power, and primacy, and say that the pope is not the head of all Christendom, they would cause him to be hanged. Yea, if Christ himself were again on earth, and should preach, without all doubt the pope would crucify him again.

from Luther's Table Talk.