The philosophical principles of the poem are those of a Stoical Pantheism. As one principle of life pervades the whole universe, there is a close connexion between things celestial and things terrestrial. In consequence of this relation, the astrologer can determine the course of the latter by observation of the heavenly bodies. Together with all the assumptions and absurdities of astrology are mingled extensive knowledge of the state of astronomical science in his day: gleams of truth shoot like meteors athwart the darkness. The subject which he has chosen is as unpromising for poetical effect and embellishment as that of Lucretius; but he does not handle it so successfully: he has neither the boldness of thought, the dignity of language, nor the imaginative grandeur which marked the old poet philosopher. The poem is incomplete; and probably owes some of its roughness and obscurity to its never having been corrected for publication. CHAPTER IX. PROSE WRITERS—INFLUENCE OF CICERO UPON THE LANGUAGE—HIS CONVERSE WITH HIS FRIENDS—HIS EARLY LIFE—PLEADS HIS FIRST CAUSE—IS QUÆSTOR, ÆDILE, PRÆTOR AND CONSUL—HIS EXILE, RETURN, AND PROVINCIAL ADMINISTRATION—HIS VACILLATING CONDUCT—HE DELIVERS HIS PHILIPPICS—IS PROSCRIBED AND ASSASSINATED—HIS CHARACTER. As oratory gave to Latin prose-writing its elegance and dignity, Cicero is not only the representative of the flourishing period of the language, but also the instrumental cause of its arriving at perfection. Circumstances may have been favourable to his influence. The national mind may have been in that stage of progress which only required a master-genius to develop it; but still it was he who gave a fixed character to the language, who showed his countrymen what eloquence especially was in its combination of the precepts of art and the principles of natural beauty; what the vigour of Latin was, and of what elegance and polish it was capable.