This work begins: "In 1621, when the Polish ambassadors presented to Paul the Fifth the banners taken from the infidels, and piously besought him for relics, the venerable Pontiff replied: "Why ask ye me for relics'?-you have but to pick up a little of your Polish earth every particle of which is the relic of a martyr." In what words then, might Christendom now address that longsuffering, and most heroic nation? In the beginning of the seventeenth...