But there is another problem suggested by the passage from the Poetics which has been cited. Aristotle says that imitation, and not metre, is the test of poetry; that even if a history were versified, it would still remain history. The question then arises whether a writer who imitates in prose, that is, without verse, would be worthy of the title of poet. Robortelli answers this question by pointing out that metre does not constitute the nature, force, or essence of poetry, which depends entirely on the fact of imitation; but at the same time, while one who imitates without verse is a poet, in the best and truest poetry imitation and metre are combined.[45]

In Fracastoro's Naugerius, sive de Poetica Dialogus (1555), there is the completest explanation of the ideal element in the Aristotelian conception of imitation. The poet, according to Aristotle, differs from other writers in that the latter consider merely the particular, while the poet aims at the universal. He is, in other words, attempting to describe the simple and essential truth of things, not by depicting the nude thing as it is, but the idea of things clothed in all their beauties.[46] Here Fracastoro attempts to explain the Aristotelian conception of the type with the aid of the Platonic notion of beauty. There were, in fact, in the Renaissance, three conceptions of beauty in general vogue. First, the purely objective conception that poetry is fixed or formal, that it consists in approximating to a certain mechanical or geometrical form, such as roundness, squareness, or straightness; secondly, the Platonic conception, ethical rather than æsthetic, connecting the beautiful with the good, and regarding both as the manifestation of divine power; and, thirdly, a more purely æsthetic conception of beauty, connecting it either with grace or conformity, or in a higher sense with whatever is proper or fitting to an object. This last idea, which at times approaches the modern conception that beauty consists in the realization of the objective character of any particular thing and in the fulfilment of the law of its own being, seems to have been derived from the Idea of the Greek rhetorician Hermogenes, whose influence during the sixteenth century was considerable, even as early as the time of Filelfo. It was the celebrated rhetorician Giulio Cammillo, however, who appears to have popularized Hermogenes in the sixteenth century, by translating the Idea into Italian, and by expounding it in a discourse published posthumously in 1544.

As will be seen, Fracastoro's conception of beauty approximates both to the Platonic and to the more purely æsthetic doctrines which we have mentioned; and he expounds and elaborates this æsthetic notion in the following manner. Each art has its own rules of proper expression. The historian or the philosopher does not aim at all the beauties or elegancies of expression, but only such as are proper to history or philosophy. But to the poet no grace, no embellishment, no ornament, is ever alien; he does not consider the particular beauty of any one field,—that is, the singular, or particular, of Aristotle,—but all that pertains to the simple idea of beauty and of beautiful speech. Yet this universalized beauty is no extraneous thing; it cannot be added to objects in which it has no place, as a golden coat on a rustic; all the essential beauty of each species is to be the especial regard of the poet. For in imitating persons and things, he neglects no beauty or elegance which he can attribute to them; he strives only after the most beautiful and most excellent, and in this way affects the minds of men in the direction of excellence and beauty.

This suggests a problem which is at the very root of Aristotle's conception of ideal imitation; and it is Fracastoro's high merit that he was one of the first writers of the Renaissance to explain away the objection, and to formulate in the most perfect manner what Aristotle really meant. For, even granting that the poet teaches more than others, may it not be urged that it is not what pertains to the thing itself, but the beauties which he adds to them,—that it is ornament, extraneous to the thing itself (extra rem), and not the thing itself,—which seems to be the chief regard of the poet? But after all, what is extra rem? Are beautiful columns, domes, peristyles extra rem, because a thatched roof will protect us from rain and frost; or is noble raiment extra rem, because a rustic garment would suffice? The poet, so far from adding anything extraneous to the things he imitates, depicts them in their very essence; and it is because he alone finds the true beauty in things, because he attributes to them their true nobility and perfection, that he is more useful than any other writer. The poet does not, as some think, deal with the false and the unreal.[47] He assumes nothing openly alien to truth, though he may permit himself to treat of old and obscure legends which cannot be verified, or of things which are regarded as true on account of their appearance, their allegorical signification (such as the ancient myths and fables), or their common acceptance by men. So we may conclude that not every one who uses verse is a poet, but only he who is moved by the true beauty of things—by their simple and essential beauties, not merely apparent ones. This is Fracastoro's conclusion, and it contains that mingling of Platonism and Aristotelianism which may be found somewhat later in Tasso and Sir Philip Sidney. It is the chief merit of Fracastoro's dialogue, that even while emphasizing this Platonic element, he clearly distinguishes and defines the ideal element in æsthetic imitation.

About the same time, in the public lectures of Varchi (1553), there was an attempt to formulate a more explicit definition of poetry on the basis of Aristotle's definition[48] of tragedy. Poetry, according to Varchi, is an imitation of certain actions, passions, habits of mind, with song, diction, and harmony, together or separately, for the purpose of removing the vices of men and inciting them to virtue, in order that they may attain their true happiness and beatitude.[49] In the first place, poetry is an imitation. Every poet imitates, and any one who does not imitate cannot be called a poet. Accordingly, Varchi follows Maggi in distinguishing three classes of poets,—the poets par excellence, who imitate in verse; the poets who imitate without using verse, such as Lucian, Boccaccio in the Decameron, and Sannazaro in the Arcadia; and the poets, commonly but less properly so called, who use verse, but who do not imitate. Verse, while not an essential attribute of poetry, is generally required; for men's innate love of harmony, according to Aristotle, was one of the causes that gave rise to poetic composition. Certain forms of poetry however, such as tragedy, cannot be written without verse; for "embellished language," that is, verse, is included in the very definition of tragedy as given by Aristotle.

The question whether poetry could be written in prose was a source of much discussion in the Renaissance; but the consensus of opinion was overwhelmingly against the prose drama. Comedy in prose was the usual Italian practice of this period, and various scholars[50] even sanction the practice on theoretical grounds. But the controversy was not brought to a head until the publication of Agostino Michele's Discorso in cui si dimostra come si possono scrivere le Commedie e le Tragedie in Prosa in 1592; and eight years later, in 1600, Paolo Beni published his Latin dissertation, Disputatio in qua ostenditur præstare Comœdiam atque Tragœdiam metrorum vinculis solvere.[51] The language of Beni's treatise was strong—its very title speaks of liberating the drama from the shackles of verse; and for a heresy of this sort, couched as it was in language that might even have been revolutionary enough for the French romanticists of 1830, the sixteenth century was not yet fully prepared. Faustino Summo, answering Beni in the same year, asserts that not only is it improper for tragedy and comedy to be written in prose, but that no form of poetry whatever can properly be composed without the accompaniment of verse.[52] The result of the whole controversy was to fix the metrical form of the drama throughout the period of classicism. But it need not be said that the same conclusion was not accepted by all for every form of poetry. The remark of Cervantes in Don Quixote, that epics can be written in prose as well as in verse, is well known; and Julius Cæsar Scaliger[53] speaks of Heliodorus's romance as a model epic.

Scaliger, however, regards verse as a fundamental part of poetry. For him, poetry and history have the forms of narration and ornament in common, but differ in that poetry adds fictions to the things that are true, or imitates actual things with fictitious ones,—majore sane apparatu, that is, among other things, with verse. As a result of this notion, Scaliger asserts that if the history of Herodotus were versified, it would no longer be history, but historical poetry. Under no circumstances, theoretically, will he permit the separation of poetry from mere versification. He accordingly dismisses with contempt the usual argument of the period that Lucan was an historian rather than a poet. "Take an actual history," says Scaliger; "how does Lucan differ, for example, from Livy? He differs in using verse. Well, then he is a poet." Poetry, then, is imitation in verse;[54] but in imitating what ought to be rather than what is, the poet creates another nature and other fortunes, as if he were another God.[55]

It will be seen from these discussions that the Renaissance always conceived of æsthetic imitation in this ideal sense. There are scarcely any traces of realism, in anything like its modern sense, in the literary criticism of this period. Torquato Tasso does indeed say that art becomes most perfect as it approaches most closely to nature;[56] and Scaliger declares that the dramatic poet must beyond all things aim at reproducing the actual conditions of life.[57] But it is the appearance of reality, and not the mere actuality itself, that the critics are speaking of here. With the vast body of mediæval literature before them, in which impossibilities follow upon impossibilities, and the sense of reality is continually obscured, the critical writers of the Renaissance were forced to lay particular stress on the element of probability, the element of close approach to the seeming realities of life; but the imitation of life is for them, nevertheless, an imitation of things as they ought to be—in other words, the imitation is ideal. Muzio says that nature is adorned by art:—

"Suol far l' opere sue roze, e tra le mani
Lasciarle a l' arte, che le adorni e limi;"[58]

and he distinctly affirms that the poet cannot remain content with exact portraiture, with the mere actuality of life:—