[The priesthood] truly plays the role of 'mediator' between heaven and earth, and it is not without reason that in the Western traditions the priesthood in all its plenitude received the symbolic name of 'pontificate', for, as Saint Bernard says, 'the Pontiff, as indicated by the etymology of his name, is a kind of bridge [pont] between God and man.' If one then wished to go back to the primal origin of the priestly and royal powers, one must look to the 'celestial world'.