20 And, lastly, history will say, that if, sure beforehand of your magnanimous generosity. We have not hesitated to tell you that the hour for sacrifice had struck, it is to remind the world, in the name of the Master of all things, that men here below should feed their minds upon thoughts of a higher sort than those of the perishable contingencies of life, and that the supreme and intangible joy of the human soul on earth is that of duty supernaturally carried out, cost what it may and so God honored, served and loved, in spite of all.
Source: Une Fois Encore (Vatican.va)