Interesting Facts about Leonardo Da Vinci's Journals

Updated on February 29, 2020
Portrait in the third page of Carlo de Blasis Book "Studi intorno all'arte e al genio di Leonardo da Vinci" published in 1872
Portrait in the third page of Carlo de Blasis Book "Studi intorno all'arte e al genio di Leonardo da Vinci" published in 1872 | Source

Leonardo Da Vinci's Reverse Handwriting and other Journal Oddities

When you look at Leonardo da Vinci’s journals, your first impression may be of awe at the sketches; but then, if you are curious enough to look at the words, you suddenly discover that the writing seems to be reversed. Was this done on purpose? Was this a method for protecting his trade secrets?

I’ll tell you the answer and more on why Leonardo da Vinci’s handwriting has fascinated the world for centuries but first let me give you a little (and very fast) background information.

Leonardo's notebooks:

Leonardo Da Vinci was born in 1452 and during his life it is estimated he produced between 20,000 to 28,000 pages of notes and sketches about work related subjects and everything else that interested him.

There are entries on: anatomy, engineering, philosophy, painting, botany, physiology, landscapes, proportion, perspective, architecture, warfare, geography, zoology, light and shade, theories and inventions.

  • He started writing his journals when he was 26 and continued writing for the rest of his life.
  • The notebooks that we know were written between 1478 and his death at age 67 in 1519.
  • They consist of pages of different sizes, sometimes loose and sometimes bound.
  • It is believed that he produced at least 50 notebooks.
  • Leonardo da Vinci’s journals are also called notebooks, manuscripts, codex (pl. codices), sketches, or notes. (They are the same thing)

Was Leonardo da Vinci left-handed and dyslexic?

Handwritting Peculiarities:

The experts seem to agree that Leonardo was left handed; however, he wrote in an unusual way even for a lefty. In most texts:

  • He started writing at the right and continued to the left.
  • Letters are inverted (back to front).

This is called mirror writing because you can read the text reflected in a mirror as if it was written, well as everyday texts (left to right, letters in the right direction). Putting a page face down against a light source can also do the trick.

People have wondered if this style of writing was deliberate to keep his notes private and safe (he designed tanks and other warfare machines after all).

It is more likely that did it because if you are left handed you don't have to write over your words making a mess pressing your hand over wet ink and because it is easier to pull the pen than to push it.

But that was not all, Leonardo would sometimes combine words and even invent new ones, he didn’t use punctuation often and used contractions and shorthand symbols.

On recent years, the theory that Leonardo Da Vinci was also dyslexic is gaining supporters because mirror writing seem to be easier to people with this dyslexia (See the Smithsonian’s video above.)

Leonardo's Drawing of Baby in the Womb
Leonardo's Drawing of Baby in the Womb | Source

Was Leonardo da Vinci a messy journal writer?

There seem to be a lack of order in the notebooks, you find a list of groceries next to the sketch of a masterpiece, and a vast majority of pages don't show any order, it must be noted that:

  • Some sketches are hasty and filled with notes, while others are carefully drawn and clean.
  • He usually limited one idea per page and if the page was not enough he made a note that he had continued onto the next page.
  • He usually wrote at both sides of the page.
  • While he wrote whenever he was inspired and about whatever he wanted, he didn’t comment personal matters; his journal was all work.
  • There are only two short personal entries in the journals regarding to the death of Leonardo’s father.
  • That's why we do not know much about his private life, which adds to the fascination we have for him.
  • He wrote math, measurements, and other scientific concepts in his journals.
  • It is said that he could simultaneously sketch with one hand and write with the other.

Old Man with Water Studies
Old Man with Water Studies | Source

Leonardo's Journals after his Death

Leonardo da Vinci’s journals were probably the most valuable work he did for the world. In them he registered not only sketches and art, but science and technique that were way ahead of his time.

Leonardo's sketch of a horse
Leonardo's sketch of a horse | Source

Many of his works, like his anatomy and physiology studies, could have accelerated dicoveries and knowledge in areas such as medicine and engineering if they had been consulted after his death by other scientists and inventors.

Unfortunately da Vinci’s peculiar handwriting worked against him. It didn't help either that he moved to a new project right away after finishing the former without putting his notes in order.

It is believed that he had the intention to publish some of his notes but he never came to “translate” it to be easily readable by others.

After he died, all his works passed on to his apprentice and friend Count Francesco Melzi. Melzi’s descendants sold Leonardo’s journals and his work was lost or in the hands of private collectors.

Some of Leonardo’s amazing experiments and scientific work remained unknown and could not be used as reference by scientists and researchers in the following centuries. It was until the last 20th century that modern scholars began studying the codices and understanding their scientific merit and value.

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You can read Leonardo's notebooks here:

  • The text translation by Jean Paul Richter in the or in the .

© 2014 Gabriela Hdez


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    • profile image


      10 months ago


    • profile image

      Diana Bertha Krausser 

      12 months ago

      I still make research on "Da Vinci"' s parents portraits...Such a great painter did not paint (even from memory) his MOTHER ("Caterina"?) and his father?...

    • profile image

      i like m big i like m chunkey 

      17 months ago

      gg no re

    • profile image


      20 months ago

      gg my dude

    • profile image

      stella lina 

      21 months ago

      for citation purposes?

    • profile image


      2 years ago

      But..i need to know more infermation about Leonardo

      I think he wrote many notes....but we speaking about few notes why?

    • profile image

      Carlos Omphroy 

      2 years ago

      Excellent article, full of information despite its brevity. And don't worry about the editing, it's very impressive work considering that English is your 2nd, or 3rd. or nth language.

    • profile image


      3 years ago

      cool article

    • profile image

      3 years ago

      PLEASE get a better editor or learn to proofread. There are some glaring errors, most notably "The text translation by Jean Paul Richter in the or in the ."

      Credibility out the window.

    • profile image


      3 years ago


    • profile image


      4 years ago

      This helped me so much keep up the good work you are so good a making point form i dont like reading so i looked at point form and helped thx :)

    • Jodah profile image

      John Hansen 

      5 years ago from Queensland Australia

      Wonderfully informative hub about a truly remarkable man. Voted up.

    • CandyTale profile imageAUTHOR

      Gabriela Hdez 

      5 years ago from Valencia, Spain

      Thanks for the comment. I will check it out, English is not my native tongue.

    • profile image


      5 years ago

      Some grammar errors, but very factual. Great article

    • CandyTale profile imageAUTHOR

      Gabriela Hdez 

      6 years ago from Valencia, Spain

      Thanks RosaLocke,

      I'm happy to hear you found it interesting!

    • rosalocke profile image

      Rosa Locke 

      6 years ago from Oregon

      Very factual and interesting!

    • CandyTale profile imageAUTHOR

      Gabriela Hdez 

      6 years ago from Valencia, Spain

      Xinyang Zhang

      Thanks, I'm happy you liked it!

    • Xinyang Zhang profile image

      Xinyang Zhang 

      6 years ago from Dublin, Ireland

      Well, we learn something new everyday.

      Great article.


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