These were the theoretical sorrows that loomed behind the personal sorrows of Dante in his poverty and exile. They helped him to pour forth the intense bitterness of his heart with the breath of prophetic invective. They made his hatred of the actual popes and of the actual Florence so much fervid zeal for what the popes and Florence ought to have been. His political passions and political hopes were fused with a sublime political ideal; that fusion sublimated them, and made it possible for the expression of them to rise into poetry. Here is one iron string on which Dante played, and which gave a tragic strength to his music. He recorded the villainies of priests, princes, and peoples. He upbraided them for their infidelity to the tasks assigned to them by God,--tasks which Dante conceived with a Biblical definiteness and simplicity. He lamented the consequences of this iniquity, wasted provinces, corrupted cities, and the bodies of heroes rolling unburied down polluted streams. These vigorous details were exalted by the immense significance that Dante infused into them. His ever-present definite ideal quickened his eye for the ebb and flow of things, rendered the experience of them singly more poignant, and the vision of them together more sustained and cumulative. Dante read contemporary Italy as the Hebrew prophets read the signs of their times; and whatever allowance our critical judgement may make for generous illusions on the part of either, there can be no doubt that their wholeness of soul, and the prophetic absoluteness of their judgements, made their hold on particular facts very strong, and their sense for impending weal or woe quite over-powering. Nor does it seem that at bottom Dante’s political philosophy, any more than that of the Hebrew prophets, missed the great causes and the great aims of human progress. Behind mythical and narrow conceptions of history, he had a true sense for the moral principles that really condition our well-being. A better science need subtract nothing from the insight he had into the difference between political good and evil. What in his day seemed a dream--that mankind should be one great commonwealth--is now obvious to the idealist, the socialist, the merchant. Science and trade are giving, in a very different form, to be sure, a practical realization to that idea. And the other half of his theory, that of the Catholic Church, is maintained literally by that church itself to this day; and the outsider might see in that ideal of a universal spiritual society a symbol or premonition of the right of the mind to freedom from legal compulsions, or of the common allegiance of honest minds to science, and to their common spiritual heritage and destiny.