10. But We judge that the present Letters and whatever is had in them, at can no time ever from injury of subreption, or obreption, or of Our intention, or in any other manner by whatever defect, be marked and/or impunged; but that they are to be and to remain always valid and in force, and ought to be observed inviably by all of whatever grade and pre-eminence in their judgement and external behavior; and declaring ineffectual and empty if anything otherwise upon these matters by whoever, with whatever authortiy and/or pretext, knowingly or unknowingly happens to be attempted; in regard to the aforementioned things, not withstanding all those things which are to the contrary, even those things worthy of special and most special mention, We from the plenitude of power, with certain knowledge and motu proprio, expressely derogate and declare to be derogated.