"As I follow no leader save Christ, so I communicate with none but your blessedness, that is, with the Chair of Peter. For this, I know, is the rock on which the Church is built. ... This is the ark of Noah, and he who is not found in it shall perish when the flood prevails. ... And as for heretics, I have never spared them; on the contrary, I have seen to it in every possible way that the Church's enemies are also my enemies."