The spiritual emotion, the improvement in the conditions of society, the increase of wealth, the growth in power of the cities of Italy, were naturally accompanied by a corresponding intellectual development, and the thirteenth century became for Italy what the twelfth had been for France, a period of splendid activity in the expression of her new life. Every mode of expression in literature and in the arts was sought and practiced, at first with feeble and ignorant hands, but with steady gain of mastery. At the beginning of the century the language was a mere spoken tongue, not yet shaped for literary use. But the example of Provence was strongly felt at the court of the Emperor Frederick II. in Sicily, and the first half of the century was not ended before many poets were imitating in the Italian tongue the poems of the troubadours. Form and substance were alike copied; there is scarcely a single original note; but the practice was of service in giving suppleness to the language, in forming it for nobler uses, and in opening the way for poetry which should be Italian in sentiment as well as in words. At the north of Italy the influence of the trouveres was felt in like manner. Everywhere the desire for expression was manifest. The spring had come, the young birds had begun to twitter, but no full song was yet heard. Love was the main theme of the poets, but it had few accents of sincerity; the common tone was artificial, was unreal. In the second half of the century new voices are heard, with accents of genuine and natural feeling; the poets begin to treat the old themes with more freshness, and to deal with religion, politics, and morals, as well as with love. The language still possesses, indeed, the quality of youth; it is still pliant, its forms have not become stiffened by age, it is fit for larger use than has yet been made of it, and lies ready and waiting, like a noble instrument, for the hand of the master which shall draw from it its full harmonies and reveal its latent power in the service he exacts from it.