Leonardo da Vinci was not only the universal genius of the Renaissance, but also a character full of eccentricities and surprising habits that made him unique in his time.
Behind the creator of the Mona Lisa, the Last Supper, and incredible inventions, there was a man with peculiar manias, unexpected fears, and bizarre behaviors that still amaze us today. Let’s discover together ten extraordinary curiosities that reveal the most human and amusing side of this unrepeatable genius.
10 Surprising Fun Facts about Leonardo da Vinci
The Left-Handed Man Who Wrote Backwards: Mirror Writing
One of Leonardo’s most fascinating characteristics was his mirror writing: he wrote from right to left, producing text that could only be read through a mirror. This peculiarity was not due to the desire to keep his projects secret, as many believe, but had purely practical origins.
Being a natural left-handed person, Leonardo wrote this way to avoid smudging the fresh ink with his hand while proceeding with the writing. However, this habit was not always constant: he often started writing normally from left to right, then suddenly stopped, realized the mistake and started again in reverse, creating documents with mixed writing that confused his assistants.
His notebooks are full of quick annotations in mirror writing, technical sketches with descriptions written backwards, and even shopping lists written like secret codes. This characteristic contributed to creating the myth of Leonardo as a mysterious and cryptic figure, when in reality it was simply an ingenious solution to a daily problem.
The Vegetarian Anatomist: A Fascinating Contradiction
Leonardo represented a living contradiction: he was a convinced vegetarian who couldn’t bear to see animals suffer, yet he dedicated much of his time to dissecting human corpses for his anatomical studies. This apparent inconsistency actually revealed the complexity of his character and his insatiable thirst for knowledge.
He regularly bought caged birds at the markets of Milan and Florence, not to own them, but for the pure pleasure of freeing them and observing their flight. He carefully studied their movements for his flying machine projects, but the gesture also had a deeper meaning: it represented his philosophy of respect for every form of life.
At the same time, he conducted nocturnal dissections on corpses obtained through channels that were not always official. His anatomical studies were so advanced and precise that they anticipated many medical discoveries by centuries. The local population was often terrified by this character who during the day preached love for animals and at night dedicated himself to practices considered macabre and sacrilegious.
During his anatomical studies, Leonardo discovered details of the circulatory system, muscular structure, and organ functioning that were completely unknown to the doctors of his time. His anatomical drawings are still today considered masterpieces of scientific and artistic precision.
The Master of Unfinished Projects: The Art of Not Completing
Leonardo was famous for his inability to complete the projects he started. This characteristic accompanied him throughout his life and was a source of infinite frustrations for his patrons, who invested considerable sums without ever seeing the finished work.
The most emblematic case was the Equestrian Monument to Francesco Sforza, commissioned by the Duke of Milan. Leonardo worked on the project for sixteen years, creating detailed studies, scale models, and even a complete clay model seven meters high. However, the bronze destined for the statue was requisitioned to make cannons during the war, and the clay model was later destroyed by French soldiers who used it as a target for exercises.
His tendency to abandon projects arose from extreme perfectionism combined with insatiable curiosity that continually led him toward new interests. Often, while working on a painting, he was struck by an idea for a machine or by a scientific discovery, and abandoned everything to dedicate himself to the new passion.
This characteristic created a persistent myth around his figure: Leonardo as a genius tormented by the impossibility of translating his grandiose visions into reality. His notebooks are full of extraordinary but incomplete projects: ideal cities, revolutionary flying machines, complex hydraulic systems that remained forever on paper.
The Culinary Inventor and the Tavern Disaster
In one of the most bizarre and unsuccessful initiatives of his career, Leonardo decided to open a tavern in Milan together with his friend and pupil Giacomo Caprotti, nicknamed Salai. The tavern, called “Le Tre Lumache” [The Three Snails], was supposed to be a practical demonstration of his technological innovations applied to catering.
Leonardo had designed a series of revolutionary mechanical devices for the era: spits that rotated automatically thanks to a system of gears moved by the heat of the fire, tablecloths that cleaned themselves through mechanisms hidden under the tables, and even the first paper napkins in history, an invention that anticipated modern use by centuries.
The problem was that all these ingenious contraptions were too complex and delicate for daily use. The spits constantly jammed, the mechanical tablecloths moved in jerks spreading food and wine on customers, the paper napkins dissolved at the first contact with moisture. The result was total chaos that transformed every meal into a tragicomic spectacle.
After just three months of activity, during which the tavern became famous more for culinary disasters than for the quality of food, Leonardo and Salai were forced to close. The experience was so traumatic that Leonardo never again attempted to apply his inventions to the restaurant sector, concentrating on more theoretical and less practical projects.
The Animal Communicator: Interspecies Conversations
Leonardo had developed a particular relationship with the animal world that went well beyond simple scientific observation. He firmly believed that animals possessed intelligence and sensitivity superior to those recognized by his contemporaries, and spent hours in unilateral conversations with his favorite creatures.
His white horse, called “Magnifico” [Magnificent], was his main confidant. Leonardo had the habit of explaining his most complex projects to the horse, especially those concerning flight. When the animal nodded (probably to chase away flies), Leonardo interpreted the gesture as a sign of approval and convinced himself he was on the right path.
In his gardens in Milan and France, Leonardo kept a varied collection of domestic and exotic animals: cats, dogs, birds of various species, and even some small reptiles. With each of them he established a personalized relationship, giving them human names and attributing specific intellectual qualities to each one.
The neighbors were perplexed and amused to see this famous artist and inventor walking in the garden having long conversations with a cat or patiently explaining to a lizard the principles of bird flight. This characteristic further fueled his reputation as an eccentric genius among the local population.
The Platonic Love for the Mona Lisa: A Special Relationship
One of the most mysterious and fascinating relationships in Leonardo’s life was the one he maintained with the portrait of the Mona Lisa. It wasn’t about love for the person represented (whose identity remains still debated), but a true artistic obsession with the painting itself.
Leonardo always carried the portrait with him during his travels, never separated from it and systematically refused every purchase offer, including attempts by the King of France Francis I who had offered him astronomical sums. This absolute dedication amazed even his contemporaries, who couldn’t understand the reasons for such attachment.
His assistants told of often having surprised him talking to the painting in the evening hours, as if it were a real person. Leonardo seemed to seek in the woman’s enigmatic smile a sort of silent approval for his projects and ideas. This habit lasted for the rest of his life.
When King Francis I asked him directly why he never sold that portrait, Leonardo replied with one of his most famous phrases: “È l’unica donna che non mi ha mai deluso e che comprende sempre i miei silenzi” [It’s the only woman who has never disappointed me and who always understands my silences]. This declaration reveals much about the artist’s introverted personality and his complex relationship with human relations.
The Fearful Inventor: The Paradox of the Timid Genius
One of the most paradoxical and human aspects of Leonardo was the contradiction between his incredible inventive capacity and his fear of personally testing his most audacious creations. Despite having designed revolutionary flying machines, armored vehicles, and highly advanced mechanical devices, he rarely had the courage to experiment with them in practice.
The most emblematic case concerns his flying machines. Leonardo had built several versions of mechanical wings and other flying devices, meticulously studying aerodynamics and bird movements. However, when the moment came to test the inventions, he always invented creative excuses: “The wind is not favorable,” “The atmospheric conditions are unsuitable,” “It’s better to postpone until tomorrow.”
His assistants tell of a particular occasion when Leonardo had prepared everything for a flight test from the roof of his Milanese home. He had gotten up at dawn, had put on the mechanical wings, had climbed onto the roof… but once he looked over and saw the height, he immediately went back inside declaring that “today the light is not suitable for such a delicate experiment.”
This characteristic reveals the most human and vulnerable side of the genius: despite his extraordinary mind being capable of imagining incredibly advanced technical solutions, he remained after all a man with his own fears and limitations. Perhaps it was precisely this awareness of his own limits that made him even more brilliant in the theoretical approach to problems.
The Pioneer of Polyphasic Sleep: Sleeping Strategically
Leonardo had developed a revolutionary rest system that anticipated by centuries modern theories on polyphasic sleep. Instead of sleeping the traditional eight consecutive nighttime hours, he had divided rest into brief sessions distributed throughout the 24-hour period.
His scheme included a main sleep of about two hours during the night, followed by 15-20 minute naps every four hours during the day. This system allowed him to maintain high concentration for longer periods and to dedicate overall more time to his activities.
His assistants often found him asleep in the most improbable places: leaning against easels in front of paintings in progress, on drawing tables surrounded by projects, even standing against corridor walls. He had developed the ability to fall asleep instantly wherever he found himself.
This rest method also had a creative aspect: Leonardo claimed that short naps favored the emergence of innovative solutions to problems he was working on. Many of his most brilliant inventions, according to his notes, came to mind precisely during these moments of semi-conscious rest.
The Stone Collector and His Chromatic Manias
Among Leonardo’s most peculiar habits was his passion for collecting stones with unusual shapes. These weren’t precious minerals or geologically interesting specimens, but simple common stones that attracted his attention for particular shapes that reminded him of faces, animals, or objects.
To each stone in his collection he assigned a female name and a specific personality. His favorite was “Giulietta” [Juliet], a vaguely heart-shaped stone that he always carried in his pocket as a lucky charm. He had the habit of caressing the stone when he was concentrated on a difficult problem, convinced that this gesture stimulated his creativity.
Equally particular was his obsession with the color pink. Leonardo dressed almost exclusively in clothes of this shade, from tunics to hats, from cloaks to stockings. He claimed that pink was “the color of intelligence” and that wearing it favored brain functioning and the emergence of innovative ideas.
He had also developed a personal perfume with a secret recipe that included herbs with a particularly pungent smell. His justification was that this perfume served to “keep boring people away” and attract only interesting and creative individuals. His contemporaries recognized him from afar not only by his pink clothes, but also by the characteristic aroma that accompanied him.
The Man with Super Senses: Extraordinary Perceptions
Leonardo possessed sensory abilities that seemed almost supernatural to his contemporaries. He had developed hearing so fine that he could perceive a person’s heartbeat simply by standing next to them, and vision so acute that he noticed details that completely escaped others.
This hypersensitivity also had problematic aspects: he couldn’t stand loud noises and covered his ears when church bells rang. During public celebrations with fireworks or musical fanfares, he was forced to take refuge at home to avoid being overwhelmed by the din.
One of his most surprising abilities was weather prediction through observation of animal behavior. Leonardo had noticed precise correlations between the movements of certain birds, the behavior of cats and dogs, and imminent atmospheric changes. Local farmers often came to consult him before making important decisions about crops.
In his notebooks he meticulously noted these sensory observations, creating a sort of atlas of perceptions that he used both for his scientific studies and for artistic works. His ability to “feel” the surrounding environment with extraordinary intensity probably contributed to the extraordinary truthfulness of his naturalistic paintings and drawings.
The Legacy of a Human Genius
These curiosities show us Leonardo da Vinci in a completely different light: not only the unreachable genius celebrated by history, but a man full of contradictions, manias, and weaknesses that made him profoundly human. His eccentricities don’t diminish his greatness, but make it more authentic and understandable.
His ability to transform apparent defects into strengths (like mirror writing), to maintain childlike curiosity toward the world (like his stone collection), and to combine scientific rigor with creative imagination, still represents today a model approach to knowledge and life.
Leonardo teaches us that genius is not incompatible with humanity, that personal quirks can be sources of innovation, and that the courage to be different is often the price to pay to leave an indelible mark in history. His legacy goes well beyond artworks and inventions: he left us the example of how to live passionately one’s uniqueness.
Useful Italian Expressions from the Article
For Italian students, here are some idiomatic expressions encountered in the article:
“Cadere dalle nuvole” [to fall from the clouds] = to be very surprised
Example: “Quando ho saputo della sua promozione, sono caduto dalle nuvole!” [When I learned about his promotion, I fell from the clouds!]
“Essere sui carboni ardenti” [to be on burning coals] = to be anxious, nervous
Example: “Prima dell’esame ero sui carboni ardenti.” [Before the exam I was on burning coals.]
“Avere una cotta” [to have a crush] = to be in love
Example: “Marco ha una cotta per la sua compagna di classe.” [Marco has a crush on his classmate.]
“Darsela a gambe” [to give it to legs] = to run away quickly
Example: “Quando ha visto il cane arrabbiato, se l’è data a gambe!” [When he saw the angry dog, he ran away quickly!]
If you want to know about another Italian historical figure, read this article about Gabriele D’Annunzio’s fun facts!
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