It has already been said that the _Georgics_ were undertaken at the request of Maecenas. [29] From more than one passage in the _Eclogues_ we should infer that Virgil was not altogether content with the light themes he was pursuing; that he had before his mind's eye dim visions of a great work which should give full scope to the powers he felt within him. But Virgil was deficient in self-reliance. He might have continued to trifle with bucolic poetry, had not Maecenas enlisted his muse in a practical object worthy of its greatness. This was the endeavour to rekindle the old love of husbandry which had been the nurse of Rome's virtue, and which was gradually dying out. To this object Virgil lent himself with enthusiasm. To feel that his art might be turned to some real good, that it might advance the welfare of the state, this idea acted on him like an inspiration. He was by early training well versed in the details of country life. And he determined that nothing which ardour or study could effect should be wanting to make his knowledge at once thorough and attractive. For seven years he wrought into their present artistic perfection the technical details of husbandry; a labour of love wrought out of study and experience, and directed, as Merivale well says, to the glorification of labour itself as the true end of man. Virgil's treatment is partially adapted from the Alexandrines; but, as he himself says, his real model is Hesiod. [30] The combination of quaint sententiousness with deep enthusiasm, which he found in the old poet, met his conception of what a practical poem should be. And so, although the desultory maxims of the _Works and Days_ give but a faint image of the comprehensive width and studied discursiveness of the _Georgics_, yet they present a much more real parallel to it than the learned trifling of Aratus or Nicander. For Virgil, like Lucretius, is no trifler: he uses verse as a serious vehicle for impressing his conviction; he acknowledges, so to say, the responsibility of his calling, [31] and writes in poetry because poetry is the clothing of his mind. Hence the _Georgics_ must be ranked as a link in the chain of serious treatises on agriculture, of which Cato's is the first and Varro's the second, designed to win the nation back to the study and discipline of its youth. And that Columella so understood it is clear both from his defending his opinions by frequent quotation from it as a standard authority, and from his writing one book of his voluminous manual in verses imitated from Virgil. The almost religious fervour with which Virgil threw himself into the task of arresting the decay of Italian life, which is the dominant motive of the _Aeneid_, is present also in the _Georgics_. The pithy condensation of useful experience characteristic of Cato, "Utiliumque sagax rerum et divina futuri Sortilegis non discrepuit sententia Delphis," [32]