Although this theology was the guide to Dante’s imagination, and his general theme, yet it was not his only interest; or rather he put into the framework of orthodox theology theories and visions of his own, fusing all into one moral unity and one poetical enthusiasm. The fusion was perfect between the personal and the traditional elements. He threw politics and love into the melting-pot, and they, too, lost their impurities and were refined into a philosophic religion. Theology became, to his mind, the guardian of patriotism, and, in a strangely literal sense, the angel of love. The political theory of Dante is a sublime and largely original one. It suffers only from its extreme ideality, which makes it inapplicable, and has caused it to be studied less than it deserves. A man’s country, in the modern sense, is something that arose yesterday, that is constantly changing its limits and its ideals; it is something that cannot last for ever. It is the product of geographical and historical accidents. The diversities between our different nations are irrational; each of them has the same right, or want of right, to its peculiarities. A man who is just and reasonable must nowadays, so far as his imagination permits, share the patriotism of the rivals and enemies of his country,--a patriotism as inevitable and pathetic as his own. Nationality being an irrational accident, like sex or complexion, a man’s allegiance to his country must be conditional, at least if he is a philosopher. His patriotism has to be subordinated to rational allegiance to such things as justice and humanity. Very different was the situation in Dante’s case. For him the love of country could be something absolute, and at the same time something reasonable, deliberate, and moral. What he found claiming his allegiance was a political body quite ideal, providential, and universal. This political body had two heads, like the heraldic eagle,--the pope and the emperor. Both were, by right, universal potentates; both should have their seat in Rome; and both should direct their government to the same end, although by different means and in different spheres. The pope should watch over the faith and discipline of the Church. He should bear witness, in all lands and ages, to the fact that life on earth was merely a preliminary to existence in the other world, and should be a preparation for that. The emperor, on the other hand, should guard peace and justice everywhere, leaving to free cities or princes the regulation of local affairs. These two powers had been established by God through special miracles and commissions. An evident providential design, culminating in them, ran through all history.