Vitruvian Man | |
---|---|
Italian: L'uomo vitruviano | |
Artist | Leonardo da Vinci |
Year | c. 1490 |
Type | Pen, brown ink and watercolor over metalpoint on paper |
Dimensions | 34.4 cm × 24.5 cm (13.5 in × 9.6 in) |
Location | Gallerie dell'Accademia, Venice |
The Vitruvian Man (Italian: L'uomo vitruviano; [ˈlwɔːmo vitruˈvjaːno]) is a drawing by the Italian Renaissance artist and scientist Leonardo da Vinci, dated to c. 1490. Inspired by the writings of the ancient Roman architect Vitruvius, the drawing depicts a nude man in two superimposed positions with his arms and legs apart and inscribed in both a circle and square. It was described by the art historian Carmen C. Bambach as "justly ranked among the all-time iconic images of Western civilization".[1] Although not the only known drawing of a man inspired by the writings of Vitruvius, the work is a unique synthesis of artistic and scientific ideals and often considered an archetypal representation of the High Renaissance.
The drawing represents Leonardo's conception of ideal body proportions, originally derived from Vitruvius but influenced by his own measurements, the drawings of his contemporaries, and the De pictura treatise by Leon Battista Alberti. Leonardo produced the Vitruvian Man in Milan and the work was probably passed to his student Francesco Melzi. It later came into the possession of Venanzio de Pagave, who convinced the engraver Carlo Giuseppe Gerli to include it in a book of Leonardo's drawings, which widely disseminated the previously little-known image. It was later owned by Giuseppe Bossi, who wrote early scholarship on it, and eventually sold to the Gallerie dell'Accademia of Venice in 1822, where it has remained since. Due to its sensitivity to light, the drawing rarely goes on public display, but it was borrowed by the Louvre in 2019 for their exhibition marking the 500th anniversary of Leonardo's death.
Name
The drawing is described by Leonardo's notes as Le proporzioni del corpo umano secondo Vitruvio,[2] variously translated as The Proportions of the Human Figure after Vitruvius,[3] or Proportional Study of a Man in the Manner of Vitruvius.[4] It is much better known as the Vitruvian Man.[2] The art historian Carlo Pedretti lists it as Homo Vitruvius, study of proportions with the human figure inscribed in a circle and a square, and later as simply Homo Vitruvius.[5]
Description
Composition
The drawing was executed primarily with pen and light-brown ink, while there are traces of brown wash (watercolor).[6][n 1] The paper measures 34.4 cm × 25.5 cm (13.5 in × 10.0 in), larger than most of Leonardo's folio manuscript sheets,[n 2] while the paper itself was originally made somewhat unevenly, given its irregular edges.[1] Close examination of the drawing reveals that it was meticulously prepared, and is devoid of "sketchy and tentative" lines.[8] Leonardo used metalpoint with a calipers and compass to make precise lines, and small tick marks were used for measurements.[6][8] These compass marks demonstrate an inner structure of "measured intervals" which is displayed in tandem with the general structure created by the geometric figures.[9]
The Vitruvian Man depicts a nude man facing forward and surrounded by a square, while superimposed on a circle.[2] The man is portrayed in different stances simultaneously: His arms are stretched above his shoulders and then perpendicular to them, while his legs are together and also spread out along the circle's base.[2] The scholar Carlo Vecce notes that this approach displays multiple phases of movement at once, akin to a photograph.[10] The man's fingers and toes are arranged carefully as to not breach the surrounding shapes.[9] Commentators often note that Leonardo went out of his way to create an artistic depiction of the man, rather than a simple portrayal.[11][12] According to the biographer Walter Isaacson, the use of delicate lines, an intimate stare, and intricate hair curls, "weaves together the human and the divine".[11] Pedretti notes close similarities between the man and the angel of Leonardo's earlier Annunciation painting.[12]
Text
The text above the image reads:
Vetruvio, architecto, mecte nella sua op(er)a d'architectura, chelle misure dell'omo sono dalla natura disstribuite inquessto modo cioè che 4 diti fa 1 palmo, et 4 palmi fa 1 pie, 6 palmi fa un chubito, 4 cubiti fa 1 homo, he 4 chubiti fa 1 passo, he 24 palmi fa 1 homo ecqueste misure son ne' sua edifiti. Settu ap(r)i ta(n)to le ga(m)be chettu chali da chapo 1/14 di tua altez(z)a e ap(r)i e alza tanto le b(r)acia che cholle lunge dita tu tochi la linia della somita del chapo, sappi che 'l cie(n)tro delle stremita delle ap(er)te me(m)bra fia il bellicho. Ello spatio chessi truova infralle ga(m)be fia tria(n)golo equilatero[13] |
Vitruvius, the architect, says in his architectural work that the measurements of man are in nature distributed in this manner, that is 4 fingers make a palm, 4 palms make a foot, 6 palms make a cubit, 4 cubits make a man, 4 cubits make a footstep, 24 palms make a man and these measures are in his buildings. If you open your legs enough that your head is lowered by 1/14 of your height and raise your arms enough that your extended fingers touch the line of the top of your head, let you know that the center of the ends of the open limbs will be the navel, and the space between the legs will be an equilateral triangle[13] |
And below:
Tanto ap(r)e l'omo nele b(r)accia, qua(n)to ella sua alteza. Dal nasscimento de chapegli al fine di sotto del mento è il decimo dell'altez(z)a del(l)'uomo. Dal di socto del mento alla som(m)ità del chapo he l'octavo dell'altez(z)a dell'omo. Dal di sop(r)a del pecto alla som(m)ità del chapo fia il sexto dell'omo. Dal di sop(r)a del pecto al nasscime(n)to de chapegli fia la sectima parte di tucto l'omo. Dalle tette al di sop(r)a del chapo fia la quarta parte dell'omo. La mag(g)iore larg(h)ez(z)a delle spalli chontiene insè [la oct] la quarta parte dell'omo. Dal gomito alla punta della mano fia la quarta parte dell'omo, da esso gomito al termine della isspalla fia la octava parte d'esso omo; tucta la mano fia la decima parte dell'omo. Il menb(r)o birile nasscie nel mez(z)o dell'omo. Il piè fia la sectima parte dell'omo. Dal di socto del piè al di socto del ginochio fia la quarta parte dell'omo. Dal di socto del ginochio al nasscime(n)to del memb(r)o fia la quarta parte dell'omo. Le parti chessi truovano infra il me(n)to e 'l naso e 'l nasscime(n)to de chapegli e quel de cigli ciasscuno spatio p(er)se essimile alloreche è 'l terzo del volto[14] |
The length of the outspread arms is equal to the height of the man. From the hairline to the bottom of the chin is one-tenth of the height of the man. From below the chin to the top of the head is one-eighth of the height of the man. From above the chest to the top of the head is one-sixth of the height of the man. From above the chest to the hairline is one-seventh of the height of a man. From the chest to the head is a quarter of the height of the man. The maximum width of the shoulders contains a quarter of the man. From the elbow to the tip of the hand is a quarter of the height of a man; the distance from the elbow to the armpit is one-eighth of the height of the man; the length of the hand is one-tenth of the man. The virile member is at the half height of the man. The foot is one-seventh of the man. From below the foot to below the knee is a quarter of the man. From below the knee to the root of the member is a quarter of the man. The distances from the chin to the nose and the hairline and the eyebrows are equal to the ears and one-third of the face[14] |
Background
Historical context
The moderately successful architect and engineer Vitruvius lived from c. 80 – c. 20 BCE in the Roman Empire.[15] He is best known for authoring De architectura (On Architecture), later called the Ten Books on Architecture, which is the only substantial architecture treatise that survives from antiquity.[16] The work's third volume includes a discussion concerning body proportions,[1] where the figures of a man in a circle and a square are respectively referred to as homo ad circulum, homo ad quadratum.[15] Vitruvius explained that:
In a temple there ought to be harmony in the symmetrical relations of the different parts to the whole. In the human body, the central point is the navel. If a man is placed flat on his back, with his hands and feet extended, and a compass centered at his navel, his fingers and toes will touch the circumference of a circle thereby described. And just as the human body yields a circular outline, so too a square may be found from it. For if we measure the distance from the soles of the feet to the top of the head, and then apply that measure to the outstretched arms, the breadth will be found to be the same as the height, as in the case of a perfect square.
— Vitruvius in De architectura, book 3[17]
19th-century historians often postulated that Leonardo had no substantial inspiration from the ancient world, propagating his stance as a 'modern genius' who rejected all of classicism.[18] This has been heavily disproven by many documented accounts from Leonardo's colleagues or records of him either owning, reading, and being influenced by writings from antiquity.[18] The treatise of Vitruvius was long lost, but rediscovered in the 15th century by Poggio Bracciolini among works such as De Rerum natura.[16] Many artists attempted to design figures which would satisfy Vitruvius' claims, with the earliest being three such images by Francesco di Giorgio Martini around the 1470s.[19][2] Leonardo may have been influenced by the architect Giacomo Andrea, with whom he records as having dined within 1490.[20] Andrea created his own Vitruvian Man drawing that year, which was unknown to scholars until the 1980s.[20]
- A Vitruvian Man depiction in the edition of De Architectura by Vitruvius; illustrated edition by Cesare Cesariano (1521)
- One of Francesco di Giorgio Martini's three attempts at creating the ideal 'Vitruvian Man'
- A 'Vitruvian Man' prototype by Giacomo Andrea, 1490
Creation
Leonardo's version of the Vitruvian Man corrected inaccuracies in Vitruvius's account, particularly related to the head, due to use of book two of the De pictura by Leon Battista Alberti.[1] Earlier drawings of the same subject "assumed that the circle and square should be centered around the navel", akin to Vitruvius's account, while Leonardo made the scheme work by using the man's genitals as the center.[9] It is likely that Leonardo's drawings dated to 1487–1490, and entitled The proportions of the arm, were related to the Vitruvian Man, possibly serving as preparatory sketches.[21]
Some commentators have speculated that Leonardo incorporated the golden ratio in the drawing, possibly due to his illustrations of Luca Pacioli's Divina proportione, largely plagiarized from Piero della Francesca,[22][n 3] concerning the ratio.[23][24] However, the Vitruvian Man is likely to have been drawn before Leonardo met Pacioli, and there has been doubt over the accuracy of such an observation.[25] As architectural scholar Vitor Murtinho explains, a circle tangent to the base of a square, with the radius and square sides related by the golden ratio, would pass exactly through the top two corners of the square, unlike Leonardo's drawing. He suggests instead constructions based on a regular octagon or on the vesica piscis.[25]
Leonardo's drawing is almost always dated to around 1490 during his First Milanese period.[15][26] The exact dating is not completely agreed upon and earlier generations of art historians, including Arthur E. Popham, frequently dated the work anywhere from 1485 to 1490.[1] Two leading art historians differ in this respect; Martin Kemp gives c. 1487,[4][n 4] while Carmen C. Bambach contends that the earliest possible date—which "one may not entirely discount"—is 1488.[1] Bambach, in addition to Pedretti, Giovanna Nepi Scirè and Annalisa Perissa Torrini give a slightly broader range of c. 1490–1491.[7] Bambach explains that this range fits "best with the manner of exact, engraving-like parallel hatching contained within robust pen-and-ink outlines, over traces of lead paint, stylus-ruling, and compass composition".[1]
Provenance
After Leonardo's death, the drawing most likely passed to his student Francesco Melzi (1491–1570),[1] who was bequeathed most of Leonardo's possessions.[27] From then on, the drawing's provenance history is almost certain: it found its way to Cesare Monti (1594–1650), was passed to his heir Anna Luisa Monti, then to the De Page family, first Venanzio de Pagave (in 1777) and then his son Gaudenzio de Page.[1][28] While owned by the elder De Page, he convinced the engraver Carlo Giuseppe Gerli to publish a book of Leonardo's drawings, which would be the first widespread dissemination of the Vitruvian Man and many other Leonardo drawings.[29] The younger de Page sold the drawing to Giuseppe Bossi, who described, discussed, and illustrated it in the fourth chapter of his 1810 monograph on Leonardo's The Last Supper, Del Cenacolo di Leonardo da Vinci (On The Last Supper of Leonardo da Vinci).[30] This chapter was published as a stand-alone study the next year Delle opinion di Leonardo da Vinci intorno alla simmetria de' corpi umani (On the opinions of Leonardo da Vinci regarding the symmetry of human bodies).[30] After Bossi's death in 1815, the drawing was sold to the abbot Luigi Celotti in 1818, and entered into the Venetian Gallerie dell'Accademia's collection in 1822, where it has since remained.[1] Because of its high artistic quality and its well-recorded history of provenance, Leonardo's authorship of the Vitruvian Man has never been doubted.[1]
The Vitruvian Man is rarely displayed as extended exposure to light would cause fading; it is kept on the fourth floor of the Gallerie dell'Accademia, in a locked room.[31] In 2019, the Louvre requested to borrow the drawing for their monumental Léonard de Vinci exhibition, which celebrated the 500th anniversary of the artist’s death.[32] They faced substantial resistance from the heritage group Italia Nostra, who contended that the drawing was too fragile to be transported, and filed a lawsuit.[33] At a hearing on 16 October 2019, a judge ruled that the group had not proven their claim, but set a maximum amount of light for the drawing to be exposed to as well as a subsequent rest period to offset its overall exposure to light.[34] The Louvre promised to lend paintings by Raphael to Italy for his own 500th death anniversary; Italy's Minister for Cultural Affairs Dario Franceschini stated that "Now a great cultural operation can start between Italy and France on the two exhibitions about Leonardo in France and Raphael in Rome."[35]
Legal dispute
In 2022, the Gallerie dell’Accademia, which owns the drawing, sued German jigsaw puzzle manufacturer Ravensburger for reproducing the artwork in one of the company's jigsaw puzzles. Ravensburger started selling the 1,000-piece jigsaw puzzle in Italy in 2009 and in 2019 the museum sent the company a cease and desist letter and demanded 10% of the revenue. Ravensburger refused to comply and subsequently was sued by the museum under Italy's Cultural Heritage and Landscape Code which governs reproductions of works deemed to be under Italy's cultural heritage. In its objections, the German company claimed that it had the right to reproduce the artwork because it was already in the public domain for centuries and that the reproduction occurred outside Italy and thus not subject to Italy's Cultural Heritage Code. The Second Chamber of the Regional Administrative Tribunal of Veneto rejected Ravensburger's arguments and decided in favor of the museum. In a ruling dated 17 November 2022, the court ordered the puzzle company to cease producing the product for commercial purposes and levied a fine of 1,500 euros for every day that the company failed to comply.[36][37][38]
Legacy
The Vitruvian Man is often considered an archetypal representative of the High Renaissance, just as Leonardo himself came to represent the archetypal 'Renaissance man'.[39] It holds a unique distinction in aligning art, mathematics, science, classicism, and naturalism.[40] The art historian Ludwig Heinrich Heydenreich, writing for Encyclopædia Britannica, states, "Leonardo envisaged the great picture chart of the human body he had produced through his anatomical drawings and Vitruvian Man as a cosmografia del minor mondo ('cosmography of the microcosm'). He believed the workings of the human body to be an analogy, in microcosm, for the workings of the universe."[41]
Kemp calls the drawing "the world's most famous drawing",[9] while Bambach describes it as "justly rank[ing] among the all-time iconic images of Western civilization".[1] Reflecting on its fame, Bambach further stated in 2019 that "the endless recent fetishizing of the image by modern commerce through ubiquitous reproductions (in popular books, advertising, and the Euro coin) has kidnapped it from the realm of Renaissance drawing, making it difficult for the viewer to appreciate it as a work of nuanced, creative expression."[1]
References
Notes
- ↑ Older sources such as Kemp (1981, p. 116) and Arasse (1998, p. 105) do not mention any watercolor, though this is clearly stated in newer studies such as Bambach (2019a, p. 221) and Zöllner (2019, p. 399).
- ↑ Most of Leonardo's folio manuscript sheets range anywhere from 29 cm × 22 cm (11.4 in × 8.7 in) to 31.5 cm × 22 cm (12.4 in × 8.7 in).[7] Bambach notes that many of these smaller folio sheets were probably once larger, and later reduced in size for bindings.[1]
- ↑ The third section of Pacioli's Divina proportione is essentially an uncredited Italian translation of della Francesca's De quinque corporibus regularibus[22]
- ↑ The unexplained dating of the drawing to 1497 in Kemp (2019, p. 85) is almost certainly a typo, which was meant to be the 1487 that Kemp (1981, p. 116) gives.
Citations
- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Bambach 2019a, p. 224.
- 1 2 3 4 5 Palmer 2018, p. 153.
- ↑ Zöllner 2015, p. 37.
- 1 2 Kemp 1981, p. 116.
- ↑ Pedretti 2006, pp. 80–82.
- 1 2 Bambach 2019a, p. 221.
- 1 2 Bambach 2019b, p. 237.
- 1 2 Isaacson 2017, p. 155.
- 1 2 3 4 Kemp 2019, p. 85.
- ↑ Vecce 2003, p. 70.
- 1 2 Isaacson 2017, p. 156.
- 1 2 Pedretti 2006, p. 82.
- 1 2 Magazù, Coletta & Migliardo 2019, p. 759.
- 1 2 Magazù, Coletta & Migliardo 2019, p. 760.
- 1 2 3 Zöllner 2019, p. 112.
- 1 2 Isaacson 2017, p. 149.
- ↑ Isaacson 2017, p. 150.
- 1 2 Marani 2003, p. 210.
- ↑ Isaacson 2017, p. 151.
- 1 2 Isaacson 2017, pp. 152–153.
- ↑ Syson et al. 2011, p. 150.
- 1 2 Mackinnon 1993, p. 165.
- ↑ Bambach 2019a, p. 225.
- ↑ Bambach 2019b, p. 238.
- 1 2 Murtinho 2015.
- ↑ Arasse 1998, p. 105.
- ↑ Kemp 2003, §1 "Life and works".
- ↑ Perissa Torrini 2009, p. 17.
- ↑ Turner 1993, pp. 84–85.
- 1 2 Mara 2019, p. 280.
- ↑ Isaacson 2017, p. 153.
- ↑ Giuffrida 2019, § paras. 1–3.
- ↑ Giuffrida 2019, § para. 2.
- ↑ Prisco 2019, § paras. 5–6.
- ↑ Prisco 2019, § para. 7.
- ↑ Dafoe 2023.
- ↑ Gallo 2023.
- ↑ Borgogni 2023.
- ↑ Holberton 2003, § para. 13.
- ↑ Marani 2003, p. 219.
- ↑ Heydenreich 2022, § "Anatomical studies and drawings of Leonardo da Vinci".
Sources
- Arasse, Daniel [in French] (1998). Leonardo da Vinci. Old Saybrook: Konecky & Konecky. ISBN 978-1-56852-198-5.
- Bambach, Carmen C. (2019a). Leonardo da Vinci Rediscovered. Vol. 2, The Maturing of a Genius: 1485–1506. New Haven: Yale University Press. ISBN 978-0-300-19195-0.
- Bambach, Carmen C. (2019b). Leonardo da Vinci Rediscovered. Vol. 4, Scholarly Apparatus to Volumes One, Two, and Three. New Haven: Yale University Press. ISBN 978-0-300-19195-0.
- Borgogni, Daniel (28 February 2023). "Extraterritorial application of the Italian Cultural Heritage Code: the Court of Venice orders Ravensburger to cease the marketing of its puzzles with the image of the Vitruvian Man". Italy Intellectual Property Blog by Trevisan & Cuonzo. Lexology. Retrieved 10 December 2023.
- Dafoe, Taylor (30 March 2023). "The Italian Museum That Owns Leonardo's 'Vitruvian Man' Has Successfully Sued to Stop Production of a 1,000-Piece Puzzle Based on the Work". Artnet News. Retrieved 10 December 2023.
- Gallo, Chiara (24 April 2023). "The Vitruvian Man highlights puzzling elements of Italian cultural heritage laws". The Institute of Art & Law. Retrieved 10 December 2023.
- Giuffrida, Angela (8 October 2019). "Leonardo da Vinci work 'too fragile' to be transported to France". The Guardian. Retrieved 12 October 2019.
- Heydenreich, Ludwig Heinrich (23 August 2022). "Leonardo da Vinci | Biography, Art & Facts". Encyclopædia Britannica. Chicago: Encyclopædia Britannica, Inc.
- Holberton, Paul (2003). "Renaissance". In Brigstocke, Hugh (ed.). The Oxford Companion to Western Art. Oxford: Oxford University Press. ISBN 978-0-19-866203-7. (subscription required)
- Isaacson, Walter (2017). Leonardo da Vinci. New York: Simon & Schuster. ISBN 978-1-5011-3915-4.
- Kemp, Martin (1981). Leonardo Da Vinci: The Marvellous Works of Nature and Man. London: J.M. Dent & Sons. ISBN 978-0-19-920778-7.
- Kemp, Martin (2003). "Leonardo da Vinci". Grove Art Online. Oxford: Oxford University Press. doi:10.1093/gao/9781884446054.article.T050401. ISBN 9781884446054. (subscription or UK public library membership required)
- Kemp, Martin (2019). Leonardo da Vinci: The 100 Milestones. New York: Sterling. ISBN 978-1-4549-304-26.
- Mackinnon, Nick (July 1993). "The Portrait of Fra Luca Pacioli". The Mathematical Gazette. Cambridge University Press ({CUP}). 77 (479): 130–219. doi:10.2307/3619717. JSTOR 3619717. S2CID 195006163.
- Magazù, Salvatore; Coletta, Nella; Migliardo, Federica (December 2019). "The Vitruvian Man of Leonardo da Vinci as a Representation of an Operational Approach to Knowledge". Foundations of Science. 24 (4): 751–773. doi:10.1007/s10699-019-09616-5. S2CID 198438727.
- Mara, Silvio (2019). "Leonardo and Architecture in the Critical Views of Giuseppe Bossi (1808-1810)". In Moffatt, Constance; Taglialagamba, Sara (eds.). Leonardo da Vinci – Nature and Architecture. Leiden: Brill Publishers. ISBN 978-90-04-39844-3.
- Marani, Pietro C. (2003) [2000]. Leonardo da Vinci: The Complete Paintings. New York: Harry N. Abrams. ISBN 978-0-8109-3581-5.
- Murtinho, Vitor (April 2015). "Leonardo's Vitruvian Man Drawing: A New Interpretation Looking at Leonardo's Geometric Constructions". Nexus Network Journal. Springer Science and Business Media {LLC}. 17 (2): 507–524. doi:10.1007/s00004-015-0247-7. hdl:10316/43761. S2CID 121033355.
- Palmer, Allison Lee (2018). Leonardo da Vinci: A Reference Guide to His Life and Works (Significant Figures in World History). Lanham: Rowman & Littlefield. ISBN 978-1-5381-1977-8.
- Pedretti, Carlo (2006). Leonardo da Vinci. Surrey: Taj Books International. ISBN 978-1-8440-6036-8.
- Perissa Torrini, Annalisa, ed. (2009). Leonardo: L'uomo vitruviano fra arte e scienza [Leonardo: The Vitruvian Man Between Art and Science]. Venice: Marsilio.
- Prisco, Jacopo (16 October 2019). "Leonardo da Vinci's 'Vitruvian Man' cleared to go to the Louvre". CNN Style. Retrieved 17 October 2019.
- Syson, Luke; Keith, Larry; Galansino, Arturo; Mazzotta, Antoni; Nethersole, Scott; Rumberg, Per (2011). Leonardo da Vinci: Painter at the Court of Milan. London: National Gallery. ISBN 978-1-85709-491-6.
- Turner, A. Richard (1993). Inventing Leonardo. New York: Alfred A. Knopf. ISBN 978-0-520-08938-9.
- Vecce, Carlo (2003). "Word and Image in Leonardo's Writings". In Bambach, Carmen C. (ed.). Leonardo da Vinci, Master Draftsman. New York: Metropolitan Museum of Art. ISBN 978-0-300-09878-5.
- Zöllner, Frank (2015). Leonardo (2nd ed.). Cologne: Taschen. ISBN 978-3-8365-0215-3.
- Zöllner, Frank (2019) [2003]. Leonardo da Vinci: The Complete Paintings and Drawings (Anniversary ed.). Cologne: Taschen. ISBN 978-3-8365-7625-3.
Further reading
- Pedretti, Carlo; Nepi Scirè, Giovanna; Torrini, Annalisa Perissa, eds. (2003). I Disegni di Leonardo da Vinci e della sua cerchia nel Gabinetto dei Disegni e Stampe delle Gallerie dell'Accademia di Venezia [The Drawings of Leonardo da Vinci and his circle in the Cabinet of Drawings and Prints of the Galleries of the Academy of Venice] (in Italian). Florence: Giunti Editore.
- Perissa Torrini, Annalisa, ed. (2019). Leonardo da Vinci, l'uomo modello del mondo [Leonardo da Vinci, The Model Man of the World] (in Italian). Cinisello Balsamo: Silvana Editoriale. ISBN 978-88-366-4327-1.