Ducite ab urbe domum, mea carmina, ducite Daphnim(72).
The love of Nature, though not then for the first time awakened,--for there are clear indications of the powerful influence of this sentiment, though in subordination to human interests, in the earlier epic, lyric, and dramatic poetry,--came then prominently forward as an element of refined pleasure in life, and as an inspiring influence both to poets and painters. The cause of the growth of this sentiment has been sought(73) partly in the rise of great cities, such as Antioch, Seleucia, Alexandria, which by debarring men from that free familiar contact with the forms, movement, and life of Nature enjoyed by the older Greeks, created an imaginative longing for a return to this communion as to a lost paradise. The longing to escape from the heat and confinement of a great southern city to the fresh sights and free air of woods and mountains must have been often felt by poets and artists who had exchanged their homes on the shores and the islands of the Aegean for the dusty streets of Alexandria. Probably the Metamorphoses of Ovid convey as good an idea as anything in Latin literature of the various influences active in the Alexandrine poetry; and the kind of scene which he takes most delight in painting in that poem is that of a cool and clear stream hidden in the thick shade of woods and haunted by the Nymphs. The taste for gardens within great cities, first developed at this time and afterwards carried to an extreme pitch of luxury in the early Roman Empire(74), further illustrates the need felt for this kind of refreshment from objects of natural beauty.
Other causes have been suggested for the growth of this sentiment, as, for instance, the decay of the polytheistic fancies, which, by regarding each natural object as identified with some spiritual being, made it less an object of affection and curiosity for its own sake. The sudden growth of this sentiment in ancient times in an age of great luxury and culture is analogous to the great development and expansion of the feeling under similar circumstances in the latter part of the eighteenth century. In both cases the sentiment arose from the desire to escape from the tedium of an artificial life. The love of Nature is not, as we might naturally expect it to be, a feeling much experienced by those who live in constant contact and conflict with its sterner forces, as by husbandmen, herdsmen, and hunters; nor is it developed consciously in primitive times or among unsophisticated races. It is the accompaniment of leisure, culture, and refinement of life. Some races are more susceptible of this feeling than others; and perhaps the Greek with his lively social temper, and the tendency of his imagination to reduce all beautiful objects to a human shape, was less capable of the disinterested delight in the sights and sounds of the outward world than the Italian. It was apparently among Siculians, the kindred of the people of Latium, and not among men living in the mountains of Arcadia or Thessaly, that Theocritus found the personages of his rustic idyl. Whether it was from the greater susceptibility of their national temperament, or from the fact that they lived in the later times of the world, to which the sentiment was more congenial, the Roman poets of the Augustan Age and of that immediately preceding it are the truest exponents of the love of Nature in ancient times; though it may be that, without the originating impulse given by the Greek mind in the Alexandrian period, and perpetuated by educated Greeks living in Southern Italy, this love of natural beauty might never have been consciously realised by them as a source of poetic inspiration.