It is in following the continuity of the passage from one form to another that Ovid displays his incomparable gifts. He tells how a woman realizes that she is changing into a lotus tree: her feet are rooted to the earth, a soft bark creeps up little by little and enfolds her groin; she makes a movement to tear her hair and finds her hands full of leaves. Or he speaks of Arachne's fingers, expert at winding or unraveling wool, turning the spindle, plying the needle in embroidery, fingers that at a certain point we see lengthening into slender spiders' legs and beginning to weave a web.

  In both Lucretius and Ovid, lightness is a way of looking at the world based on philosophy and science: the doctrines of Epicurus for Lucretius and those of Pythagoras for Ovid (a Pythagoras who, as presented by Ovid, greatly resembles the Buddha). In both cases the lightness is also something arising from the writing itself, from the poet's own linguistic power, quite independent of whatever philosophic doctrine the poet claims to be following.

  From what I have said so far, I think the concept of lightness is beginning to take shape. Above all I hope to have shown that there is such a thing as a lightness of thoughtfulness, just as we all know that there is a lightness of frivolity. In fact, thoughtful lightness can make frivolity seem dull and heavy.

  I could not illustrate this notion better than by using a story from the Decameron (VI.9), in which the Florentine poet Guido Cavalcanti appears. Boccaccio presents Cavalcanti as an austere philosopher, walking meditatively among marble tombs near a church. The jeunesse doree of Florence is riding through the city in a group, on the way from one party to another, always looking for a chance to enlarge its round of invitations. Cavalcanti is not popular with them because, although wealthy and elegant, he has refused to join in their revels—and also because his mysterious philosophy is suspected of impiety.

  Ora avvenne un giorno che, essendo Guido partito d'Orto San Michele e venutosene per lo Corso degli Adi-mari infino a San Giovanni, il quale spesse volte era suo cammino, essendo arche grandi di marmo, che oggi sono in Santa Reparata, e molte altre dintorno a San Giovanni, e egli essendo tralle colonne del porfido che vi sono e quelle arche e la porta di San Giovanni, che serrata era, messer Betto con sua brigata a caval venendo su per la piazza di Santa Reparata, vedendo Guido la tra quelle sepolture, dis-sero: “Andiamo a dargli briga”; e spronati i cavalli, a guisa d'uno assalto sollazzevole gli furono, quasi prima che egli se ne avvedesse, sopra e cominciarongli a dire: “Guido, tu rifiuti d'esser di nostra brigata; ma ecco, quando tu avrai trovato che Idio non sia, che avrai fatto?”

  A' quali Guido, da lor veggendosi chiuso, prestamente disse: “Signori, voi mi potete dire a casa vostra cio che vi piace”; e posta la mano sopra una di quelle arche, che grandi erano, si come colui che leggerissimo era, prese un salto e fusi gittato dalPaltra parte, e sviluppatosi da loro se n'ando.

  One day, Guido left Orto San Michele and walked along the Corso degli Adimari, which was often his route, as far as San Giovanni. Great marble tombs, now in Santa Reparata, were then scattered about San Giovanni. As he was standing between the porphyry columns of the church and these tombs, with the door of the church shut fast behind him, Messer Betto and his company came riding along the Piazza di Santa Reparata. Catching sight of Guido among the tombs, they said, “Let's go and pick a quarrel.” Spurring their horses, they came down upon him in play, like a charging squad, before he was aware of them. They began: “Guido, you refuse to be of our company; but look, when you have proved that there is no God, what will you have accomplished?” Guido, seeing himself surrounded by them, answered quickly: “Gentlemen, you may say anything you wish to me in your own home.” Then, resting his hand on one of the great tombs and being very nimble, he leaped over it and, landing on the other side, made off and rid himself of them.

  What interests us here is not so much the spirited reply attributed to Cavalcanti (which may be interpreted in the light of the fact that the “Epicurianism” claimed by the poet was really Aver-roism, according to which the individual soul is only a part of the universal intellect: the tombs are jour home and not mine insofar as individual bodily death is overcome by anyone who rises to universal contemplation through intellectual speculation). What strikes me most is the visual scene evoked by Boccaccio, of Cavalcanti freeing himself with a leap “si come colui che leggerissimo era,” a man very light in body.

  Were I to choose an auspicious image for the new millennium, I would choose that one: the sudden agile leap of the poet-philosopher who raises himself above the weight of the world, showing that with all his gravity he has the secret of lightness, and that what many consider to be the vitality of the times— noisy, aggressive, revving and roaring—belongs to the realm of death, like a cemetery for rusty old cars.

  I would like you to bear this image in mind as I proceed to talk about Cavalcanti as the poet of lightness. The dramatis per-sonae of his poems are not so much human beings as sighs, rays of light, optical images, and above all those nonmaterial impulses and messages he calls “spirits.” A theme by no means “light,” such as the sufferings of love, is dissolved into impalpable entities that move between sensitive soul and intellective soul, between heart and mind, between eyes and voice. In short, in every case we are concerned with something marked by three characteristics: (1) it is to the highest degree light; (2) it is in motion; (3) it is a vector of information. In some poems this messenger-cum-message is the poetic text itself. In the most famous one—”Per chY no spero di tornai giammai” (Because I never hope to return)—the exiled poet addresses the ballad he is writing and says: “Va' tu, leggera e piana, / dritt' a la donna mia” (Go, light and soft, / straight to my lady). In another poem it is the tools of the writer's trade—quills and the knives to sharpen them—that have their say: “Noi sian le triste penne isbigottite/ le cesoiuzze e'l coltellin dolente” (We are the poor, bewildered quills, / The little scissors and the grieving penknife). In sonnet 13 the word “spir-ito” or “spiritello” appears in every line. In what is plainly a self-parody, Cavalcanti takes his predilection for that key word to its ultimate conclusion, concentrating a complicated abstract narrative involving fourteen “spirits,” each with a different function, and all within the scope of fourteen lines. In another sonnet the body is dismembered by the sufferings of love, but goes on walking about like an automaton “fatto di rame o di pietra o di legno” (made of copper or stone or wood). Years before, Guinizelli in one of his sonnets had transformed his poet into a brass statue, a concrete image that draws its strength from the very sense of weight it communicates. In Cavalcanti the weight of matter is dissolved because the materials of the human simulacrum can be many, all interchangeable. The metaphor does not impress a solid image on us, and not even the word pietra (stone) lends heaviness to the line. Here also we find the equality of all existing things that I spoke of in regard to Lucretius and Ovid. The critic Gian-franco Contini defines it as the “parificazione cavalcantiana dei reali,” referring to Cavalcanti's way of putting everything on the same level.

  The most felicitous example of Cavalcanti's leveling of things we find in a sonnet that begins with a list of images of beauty, all destined to be surpassed by the beauty of the beloved woman:

  Bilta di donna e di saccente core

  e cavalieri armati che sien genti;

  cantar d'augelli e ragionar d'amore;

  adorni legni n mar forte correnti;

  aria serena quand'apar I'albore

  e bianca neve scender senza venti;

  rivera d'acqua e prato d'ogni fiore;

  oro, argento, azzuro 'n ornamenti

  Beauty of woman and of wise hearts, and gentle knights in armor; the song of birds and the discourse of love; bright ships moving swiftly on the sea; clear air when the dawn appears, and white snow falling without wind; stream of water and meadow with every flower; gold, silver, azure in ornaments.

  The line “e bianca neve scender senza venti” is taken up with a few modifications by Dante in Inferno XIV 30: “Come di nev
e in alpe sanza vento” (As snow falls in the mountains without wind). The two lines are almost identical, but they express two completely different concepts. In both the snow on windless days suggests a light, silent movement. But here the resemblance ends. In Dante the line is dominated by the specification of the place (“in alpe”), which gives us a mountainous landscape, whereas in Cavalcanti the adjective “bianca,” which may seem pleonastic, together with the verb “fall”—also completely predictable—dissolve the landscape into an atmosphere of suspended abstraction. But it is chiefly the first word that determines the difference between the two lines. In Cavalcanti the conjunction e (and) puts the snow on the same level as the other visions that precede and follow it: a series of images like a catalogue of the beauties of the world. In Dante the adverb come (as) encloses the entire scene in the frame of a metaphor, but within this frame it has a concrete reality of its own. No less concrete and dramatic is the landscape of hell under a rain of fire, which he illustrates by the simile of the snow. In Cavalcanti everything moves so swifdy that we are unaware of its consistency, only of its effects. In Dante everything acquires consistency and stability: the weight of things is precisely established. Even when he is speaking of light things, Dante seems to want to render the exact weight of this lightness: “come di neve in alpe sanza vento.” In another very similar line the weight of a body sinking into the water and disappearing is, as it were, held back and slowed down: “Come per acqua cupa cosa grave” (Like some heavy thing in deep water; Paradiso III. 123).

  At this point we should remember that the idea of the world as composed of weighdess atoms is striking just because we know the weight of things so well. So, too, we would be unable to appreciate the lightness of language if we could not appreciate language that has some weight to it.

  We might say that throughout the centuries two opposite tendencies have competed in literature: one tries to make language into a weighdess element that hovers above things like a cloud or better, perhaps, the finest dust or, better still, a field of magnetic impulses. The other tries to give language the weight, density, and concreteness of things, bodies, and sensations.

  At the very beginnings of Italian, and indeed European, literature, the first tendency was initiated by Cavalcanti, the second by Dante. The contrast is generally valid but would need endless qualification, given Dante's enormous wealth of resources and his extraordinary versatility. It is not by chance that the sonnet of Dante's instilled with the most felicitous lightness (“Guido, i' vorrei che tu e Lapo ed io”) is in fact addressed to Cavalcanti. In the Vita nuova Dante deals with the same material as his friend and master, and certain words, themes, and ideas are found in both poets. When Dante wants to express lightness, even in the Dinna Commedia, no one can do it better than he does, but his real genius lies in the opposite direction—in extracting all the possibilities of sound and emotion and feeling from the language, in capturing the world in verse at all its various levels, in all its forms and attributes, in transmitting the sense that the world is organized into a system, an order, or a hierarchy where everything has its place. To push this contrast perhaps too far, I might say that Dante gives solidity even to the most abstract intellectual speculation, whereas Cavalcanti dissolves the concreteness of tangible experience in lines of measured rhythm, syllable by syllable, as if thought were darting out of darkness in swift lightning flashes.

  This discussion of Cavalcanti has served to clarify (at least to myself) what I mean by “lightness.” Lightness for me goes with precision and determination, not with vagueness and the haphazard. Paul Valery said: “II faut etre leger comme l'oiseau, et non comme la plume” (One should be light like a bird, and not like a feather). I have relied on Cavalcanti for examples of lightness in at least three different senses. First there is a lightening of language whereby meaning is conveyed through a verbal texture that seems weightless, until the meaning itself takes on the same rarefied consistency. I leave it to you to find other examples of this sort. Emily Dickinson, for instance, can supply as many as we might wish:

  A sepal, petal and a thorn

  Upon a common summer's morn—

  A flask of Dew-A Bee or two-

  A Breeze-a caper in the trees-

  And I'm a Rose!

  Second, there is the narration of a train of thought or psychological process in which subtle and imperceptible elements are at work, or any kind of description that involves a high degree of abstraction. To find a more modern example of this we may turn to Henry James, opening any of his books at random:

  It was as if these depths, constantly bridged over by a structure that was firm enough in spite of its lightness and of its occasional oscillation in the somewhat vertiginous air, invited on occasion, in the interest of their nerves, a dropping of the plummet and a measurement of the abyss. A difference had been made moreover, once for all, by the fact that she had, all the while, not appeared to feel the need of rebutting his charge of an idea within her that she didn't dare to express, uttered just before one of the fullest of their later discussions ended. (“The Beast in the Jungle,” chap. 3)

  And third there is a visual image of lightness that acquires emblematic value, such as—in Boccaccio's story—Cavalcanti vaulting on nimble legs over a tombstone. Some literary inventions are impressed on our memories by their verbal implications rather than by their actual words. The scene in which Don Quixote drives his lance through the sail of a windmill and is hoisted up into the air takes only a few lines in Cervantes' novel. One might even say that the author put only a minimal fraction of his resources into the passage. In spite of this, it remains one of the most famous passages in all of literature.

  I think that with these definitions I can begin to leaf through the books in my library, seeking examples of lightness. In Shakespeare I look immediately for the point at which Mercutio arrives on the scene (I.iv.17—18): “You are a lover; borrow Cupid's wings / And soar with them above a common bound.” Mercutio immediately contradicts Romeo, who has just replied, “Under love's heavy burden do I sink.” Mercutio's way of moving about the world is plain enough from the very first verbs he uses: to dance, to soar, to prick. The human face is a mask, “a visor.” Scarcely has he come on stage when he feels the need to explain his philosophy, not with a theoretical discourse but by relating a dream. Queen Mab, the fairies' midwife, appears in a chariot made of “an empty hazelnut”:

  Her wagon-spokes made of long spinners' legs,

  The cover, of the wings of grasshoppers;

  Her traces, of the smallest spider web;

  Her collars, of the moonshine's wat'ry beams;

  Her whip, of cricket's bone; the lash, of film

  And let's not forget that this coach is “drawn with a team of little atomies”—in my opinion a vital detail that enables the dream of Queen Mab to combine Lucretian atomism, Renaissance neo-Platonism, and Celtic folklore.

  I would also like Mercutio's dancing gait to come along with us across the threshold of the new millennium. The times that form a background to Romeo and Juliet are in many respects not unlike our own: cities bloodstained by violent struggles just as senseless as those of the Montagues and Capulets; sexual liberation, as preached by the Nurse, which does not succeed in becoming the model for universal love; ventures carried out in the generous optimism of “natural philosophy,” as preached by Friar Laurence, with unsure results that can yield death as much as life.

  The age of Shakespeare recognized subtle forces connecting macrocosm and microcosm, ranging from those of the Neo-Platonic firmament to the spirits of metal transformed in the alchemist's crucible. Classical myths can provide their repertory of nymphs and dryads, but the Celtic mythologies are even richer in the imagery of the most delicate natural forces, with their elves and fairies. This cultural background—and I can't help thinking of Francis Yates's fascinating studies on the occult philosophy of the Renaissance and its echoes in literature—explains why Shakespeare provides the fullest exemplification
of my thesis. And I am not thinking solely of Puck and the whole phantasmagoria of A Midsummer Night's Dream or of Ariel and those who “are such stuff/ As dreams are made on.” I am thinking above all of that particular and existential inflection that makes it possible for Shakespeare's characters to distance themselves from their own drama, thus dissolving it into melancholy and irony.

  The weightless gravity I have spoken of with regard to Caval-canti reappears in the age of Cervantes and Shakespeare: it is that special connection between melancholy and humor studied by Raymond Klibansky, Erwin Panofsky, and Fritz Saxl in Saturn and Melancholy (1964). As melancholy is sadness that has taken on lightness, so humor is comedy that has lost its bodily weight (a dimension of human carnality that nonetheless constitutes the greatness of Boccaccio and Rabelais). It casts doubt on the self, on the world, and on the whole network of relationships that are at stake. Melancholy and humor, inextricably intermingled, characterize the accents of the Prince of Denmark, accents we have learned to recognize in nearly all Shakespeare's plays on the lips of so many avatars of Hamlet. One of these, Jacques in As You Like It (IVi. 15—18), defines melancholy in these terms: “but it is a melancholy of mine own, compounded of many simples, extracted from many objects, and indeed the sundry contemplation of my travels, which, by often rumination, wraps me in a most humorous sadness.” It is therefore not a dense, opaque melancholy, but a veil of minute particles of humours and sensations, a fine dust of atoms, like everything else that goes to make up the ultimate substance of the multiplicity of things.

  I confess that I am tempted to construct my own Shakespeare, a Lucretian atomist, but I realize that this would be arbitrary. The first writer in the modern world who explicitly professed an atomistic concept of the universe in its fantastic transfiguration is not found until some years later, in France: Cyrano de Ber-gerac.