Perhaps the most famous prose work by the Romantic poet Percy Bysshe Shelley, if only for the sentence "Poets are the unacknowledged legislators of the world." Written in 1821, but not published until 1840, Shelley's essay is in part a reply to The Four Ages of Poetry (1820) by Thomas Love Peacock. It also owes a debt, not least in title, to Sir Philip Sidney's The Defence of Poesie (1595). Peacock's essay argued humorously that poetry inevitably declined as history progressed, and that the best minds of the future should focus on science and economics instead. In this essay, Shelley takes Peacock more seriously than Peacock meant, in order to launch a defence of the role of poetry in modern society, sketching out how imaginative literature and arts have the power to bind society together, to foster sympathy for other people who may be quite different from ourselves, and to promote moral action.

This text is described by Shelley as "Part One" of his Defence, but no more was written. Paragraphing is as in the original, for which I apologize.


ACCORDING to one mode of regarding those two classes of mental action, which are called reason and imagination, the former may be considered as mind contemplating the relations borne by one thought to another, however produced, and the latter, as mind acting upon those thoughts so as to color them with its own light, and composing from them, as from elements, other thoughts, each containing within itself the principle of its own integrity. The one is the Greek, or the principle of synthesis, and has for its objects those forms which are common to universal nature and existence itself; the other is the Greek, or principle of analysis, and its action regards the relations of things simply as relations; considering thoughts, not in their integral unity, but as the algebraical representations which conduct to certain general results. Reason is the enumeration of qualities already known; imagination is the perception of the value of those qualities, both separately and as a whole. Reason respects the differences, and imagination the similitudes of things. Reason is to imagination as the instrument to the agent, as the body to the spirit, as the shadow to the substance.

Poetry, in a general sense, may be defined to be "the expression of the imagination": and poetry is connate with the origin of man. Man is an instrument over which a series of external and internal impressions are driven, like the alternations of an ever-changing wind over an Aeolian lyre, which move it by their motion to ever-changing melody. But there is a principle within the human being, and perhaps within all sentient beings, which acts otherwise than in the lyre, and produces not melody alone, but harmony, by an internal adjustment of the sounds or motions thus excited to the impressions which excite them. It is as if the lyre could accommodate its chords to the motions of that which strikes them, in a determined proportion of sound; even as the musician can accommodate his voice to the sound of the lyre. A child at play by itself will express its delight by its voice and motions; and every inflexion of tone and every gesture will bear exact relation to a corresponding antitype in the pleasurable impressions which awakened it; it will be the reflected image of that impression; and as the lyre trembles and sounds after the wind has died away, so the child seeks, by prolonging in its voice and motions the duration of the effect, to prolong also a consciousness of the cause. In relation to the objects which delight a child these expressions are what poetry is to higher objects. The savage (for the savage is to ages what the child is to years) expresses the emotions produced in him by surrounding objects in a similar manner; and language and gesture, together with plastic or pictorial imitation, become the image of the combined effect of those objects, and of his apprehension of them. Man in society, with all his passions and his pleasures, next becomes the object of the passions and pleasures of man; an additional class of emotions produces an augmented treasure of expressions; and language, gesture, and the imitative arts, become at once the representation and the medium, the pencil and the picture, the chisel and the statute, the chord and the harmony. The social sympathies, or those laws from which, as from its elements, society results, begin to develop themselves from the moment that two human beings coexist; the future is contained within the present, as the plant within the seed; and equality, diversity, unity, contrast, mutual dependence, become the principles alone capable of affording the motives according to which the will of a social being is determined to action, inasmuch as he is social; and constitute pleasure in sensation, virtue in sentiment, beauty in art, truth in reasoning, and love in the intercourse of kind. Hence men, even in the infancy of society, observe a certain order in their words and actions, distinct from that of the objects and the impressions represented by them, all expression being subject to the laws of that from which it proceeds. But let us dismiss those more general considerations which might involve an inquiry into the principles of society itself, and restrict our view to the manner in which the imagination is expressed upon its forms.

In the youth of the world, men dance and sing and imitate natural objects, observing in these actions, as in all others, a certain rhythm or order. And, although all men observe a similar, they observe not the same order, in the motions of the dance, in the melody of the song, in the combinations of language, in the series of their imitations of natural objects. For there is a certain order or rhythm belonging to each of these classes of mimetic representation, from which the hearer and the spectator receive an intenser and purer pleasure than from any other: the sense of an approximation to this order has been called taste by modern writers. Every man in the infancy of art observes an order which approximates more or less closely to that from which this highest delight results: but the diversity is not sufficiently marked, as that its gradations should be sensible, except in those instances where the predominance of this faculty of approximation to the beautiful (for so we may be permitted to name the relation between this highest pleasure and its cause) is very great. Those in whom it exists in excess are poets, in the most universal sense of the word; and the pleasure resulting from the manner in which they express the influence of society or nature upon their own minds, communicates itself to others, and gathers a sort of reduplication from that community. Their language is vitally metaphorical; that is, it marks the before unapprehended relations of things and perpetuates their apprehension, until the words which represent them, become, through time, signs for portions or classes of thoughts instead of pictures of integral thoughts; and then if no new poets should arise to create afresh the associations which have been thus disorganized, language will be dead to all the nobler purposes of human intercourse. These similitudes or relations are finely said by Lord Bacon to be "the same footsteps of nature impressed upon the various subjects of the world" 1—and he considers the faculty which perceives them as the storehouse of axioms common to all knowledge. In the infancy of society every author is necessarily a poet, because language itself is poetry; and to be a poet is to apprehend the true and the beautiful, in a word, the good which exists in the relation, subsisting, first between existence and perception, and secondly between perception and expression. Every original language near to its source is in itself the chaos of a cyclic poem: the copiousness of lexicography and the distinctions of grammar are the works of a later age, and are merely the catalogue and the form of the creations of poetry.

But poets, or those who imagine and express this indestructible order, are not only the authors of language and of music, of the dance, and architecture, and statuary, and painting: they are the institutors of laws, and the founders of civil society, and the inventors of the arts of life, and the teachers, who draw into a certain propinquity with the beautiful and the true that partial apprehension of the agencies of the invisible world which is called religion. Hence all original religions are allegorical, or susceptible of allegory, and, like Janus, have a double face of false and true. Poets, according to the circumstances of the age and nation in which they appeared, were called, in the earlier epochs of the world, legislators, or prophets: a poet essentially comprises and unites both these characters. For he not only beholds intensely the present as it is, and discovers those laws according to which present things ought to be ordered, but he beholds the future in the present, and his thoughts are the germs of the flower and the fruit of latest time. Not that I assert poets to be prophets in the gross sense of the word, or that they can foretell the form as surely as they foreknow the spirit of events: such is the pretence of superstition, which would make poetry an attribute of prophecy, rather than prophecy an attribute of poetry. A poet participates in the eternal, the infinite, and the one; as far as relates to his conceptions, time and place and number are not. The grammatical forms which express the moods of time, and the difference of persons, and the distinction of place, are convertible with respect to the highest poetry without injuring it as poetry; and the choruses of Aeschylus, and the book of Job, and Dante’s "Paradise" would afford, more than any other writings, examples of this fact, if the limits of this essay did not forbid citation. The creations of sculpture, painting, and music are illustrations still more decisive.

Language, color, form, and religious and civil habits of action, are all the instruments and materials of poetry; they may be called poetry by that figure of speech which considers the effect as a synonym of the cause. But poetry in a more restricted sense expresses those arrangements of language, and especially metrical language, which are created by that imperial faculty, whose throne is curtained within the invisible nature of man. And this springs from the nature itself of language, which is a more direct representation of the actions and passions of our internal being, and is susceptible of more various and delicate combinations, than color, form, or motion, and is more plastic and obedient to the control of that faculty of which it is the creation. For language is arbitrarily produced by the imagination, and has relation to thoughts alone; but all other materials, instruments, and conditions of art have relations among each other, which limit and interpose between conception and expression. The former is as a mirror which reflects, the latter as a cloud which enfeebles, the light of which both are mediums of communication. Hence the fame of sculptors, painters, and musicians, although the intrinsic powers of the great masters of these arts may yield in no degree to that of those who have employed language as the hieroglyphic of their thoughts, has never equalled that of poets in the restricted sense of the term; as two performers of equal skill will produce unequal effects from a guitar and a harp. The fame of legislators and founders of religions, so long as their institutions last, alone seems to exceed that of poets in the restricted sense; but it can scarcely be a question, whether, if we deduct the celebrity which their flattery of the gross opinions of the vulgar usually conciliates, together with that which belonged to them in their higher character of poets, any excess will remain.

We have thus circumscribed the word poetry within the limits of that art which is the most familiar and the most perfect expression of the faculty itself. It is necessary, however, to make the circle still narrower, and to determine the distinction between measured and unmeasured language; for the popular division into prose and verse is inadmissible in accurate philosophy.

Sounds as well as thoughts have relation both between each other and towards that which they represent, and a perception of the order of those relations has always been found connected with a perception of the order of the relations of thoughts. Hence the language of poets has ever affected a certain uniform and harmonious recurrence of sound, without which it were not poetry, and which is scarcely less indispensable to the communication of its influence, than the words themselves, without reference to that peculiar order. Hence the vanity of translation; it were as wise to cast a violet into a crucible that you might discover the formal principle of its color and odor, as seek to transfuse from one language into another the creations of a poet. The plant must spring again from its seed, or it will bear no flower—and this is the burden of the curse of Babel.

An observation of the regular mode of the recurrence of harmony in the language of poetical minds, together with its relation to music, produced metre, or a certain system of traditional forms of harmony and language. Yet it is by no means essential that a poet should accommodate his language to this traditional form, so that the harmony, which is its spirit, be observed. The practice is indeed convenient and popular, and to be preferred, especially in such composition as includes much action: but every great poet must inevitably innovate upon the example of his predecessors in the exact structure of his peculiar versification. The distinction between poets and prose writers is a vulgar error. The distinction between philosophers and poets has been anticipated. Plato was essentially a poet—the truth and splendor of his imagery, and the melody of his language, are the most intense that it is possible to conceive. He rejected the measure of the epic, dramatic, and lyrical forms, because he sought to kindle a harmony in thoughts divested of shape and action, and he forebore to invent any regular plan of rhythm which would include, under determinate forms, the varied pauses of his style. Cicero sought to imitate the cadence of his periods, but with little success. Lord Bacon was a poet. 2 His language has a sweet and majestic rhythm, which satisfies the sense, no less than the almost superhuman wisdom of his philosophy satisfies the intellect; it is a strain which distends, and then bursts the circumference of the reader’s mind, and pours itself forth together with it into the universal element with which it has perpetual sympathy. All the authors of revolutions in opinion are not only necessarily poets as they are inventors, nor even as their words unveil the permanent analogy of things by images which participate in the life of truth; but as their periods are harmonious and rhythmical, and contain in themselves the elements of verse; being the echo of the eternal music. Nor are those supreme poets, who have employed traditional forms of rhythm on account of the form and action of their subjects, less capable of perceiving and teaching the truth of things, than those who have omitted that form. Shakespeare, Dante, and Milton (to confine ourselves to modern writers) are philosophers of the very loftiest power.

A poem is the very image of life expressed in its eternal truth. There is this difference between a story and a poem, that a story is a catalogue of detached facts, which have no other connection than time, place, circumstance, cause and effect; the other is the creation of actions according to the unchangeable forms of human nature, as existing in the mind of the Creator, which is itself the image of all other minds. The one is partial, and applies only to a definite period of time, and a certain combination of events which can never again recur; the other is universal, and contains within itself the germ of a relation to whatever motives or actions have place in the possible varieties of human nature. Time, which destroys the beauty and the use of the story of particular facts, stripped of the poetry which should invest them, augments that of poetry, and forever develops new and wonderful applications of the eternal truth which it contains. Hence epitomes have been called the moths of just history; they eat out the poetry of it. A story of particular facts is as a mirror which obscures and distorts that which should be beautiful; poetry is a mirror which makes beautiful that which is distorted.

The parts of a composition may be poetical, without the composition as a whole being a poem. A single sentence may be considered as a whole, though it may be found in the midst of a series of unassimilated portions; a single word even may be a spark of inextinguishable thought. And thus all the great historians, Herodotus, Plutarch, Livy, were poets; and although the plan of these writers, especially that of Livy, restrained them from developing this faculty in its highest degree, they made copious and ample amends for their subjection, by filling all the interstices of their subjects with living images.

Having determined what is poetry, and who are poets, let us proceed to estimate its effects upon society.


Note 1. Francis Bacon, "De augmentis scientiarum," (1623) cap. 1, lib. iii.
Note 2. See the "Filum Labyrinthi," and the "Essay on Death" particularly. — Shelley.

>> A Defence of Poetry: Section 2 >> A Defence of Poetry: Section 3

(Note: these divisions are inserted to fit better the structure of E2, and are not in the original text.)

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