His ardour for acquiring knowledge was unbounded,--the society of a single town, and the few hooks that he possessed, could not satisfy him. He believed that travelling was the best school for learning. His great desire was to visit Rome; and a journey hither was projected by him and the bishop of Lombes. Delays intervening, which prevented their immediate departure, Petrarch made the tour of France, Flanders, and Brabant: [Sidenote: 1331. Ætat. 27.] "For which journey," he says, "whatever cause may have been alleged, the real motive was a fervent desire of extending my experience."[36] He first visited Paris, and took pleasure in satisfying himself of the truth or falsehood of the accounts he had heard of that city. His curiosity was insatiable; when the day did not suffice, he devoted the night to his enquiries. He found the city ill built and disagreeable, but he was pleased with the inhabitants; describing them, as a traveller might of the present day, as gay, and fond of society; facile and animated in conversation, and amiable in their assemblies and feasts; eager in their search after amusement, and driving away care by pleasure; prompt to discover and to ridicule the faults of others, and covering their own with a thick veil.[37] From Paris, Petrarch continued his travels through Liege, Aix-la-Chapelle, and Cologne. In all places he searched for ancient manuscripts. At Liege he discovered two orations of Cicero, but could not find any one capable of copying them in the whole town: it was with difficulty that he procured some yellow and pale ink, with which he transcribed them himself.[38] From Cologne he turned his steps homeward, passing through Ardennes on his way to Lyons. His heart warmed at the expectation of returning to his friends; and the image of Laura took possession of his imagination. Whilst wandering alone through the wild forest, which armed men feared to traverse, no idea of danger occurred to him; love occupied all his thoughts: the form of Laura flitted among the trees; and the waving branches, and the song of birds, and the murmuring streams, made her movements and her voice present to his senses with all the liveliness of reality. Twilight closed in, and imparted a portion of dismay, till, emerging from the dark trees, he beheld the Rhone, which threaded the plains towards the native town of the lady of his love; and at sight of the familiar river, a joyous rapture took place of gloom. Two of the most graceful of his sonnets were written to describe the fantastic images that haunted him as he traversed the forest, and the kindling of his soul when, emerging from its depths, he was, as it were serenely welcomed by the delightful country and beloved river which appeared before him.[39]