Famous Scientists

  • Home
  • Top 100 Scientists
  • List of Scientists
  • Blog

Niccolo Leoniceno

Lived 1428 – 1524.

Niccolo Leoniceno was an Italian humanist and physician. He was born in the year 1428 in Lonigo, Veneto. His father was a doctor, and this may have opened his young mind to medicine and prompted his interest to be a man of science.

He translated many ancient texts, including “Ars medica” by the second century Greek physician Galen in 1508. He accompanied the translation with a controversial methodical prologue, so beginning the tradition of the “scientific method” for research.

During his life he was known by several names including Nicolaus Leonicenus of Vicenza, Nicolò da Lonigo da Vincenza, Nicolaus Leoninus, Nicolo Lonigo, Nicolaus Leonicenus Vicentinus, and Nicolo Leoniceno.

Educational Background

Niccolo Leoniceno studied the Greek language under Ognibene da Lonigo in Vicenza. In 1453, he graduated from the University of Padua. At this university he studied philosophy and medicine under the wing of Pietro Roccabonella Veneziano. After completing his doctorate, Leoniceno attended the University of Ferrara. There, he taught mathematics, medicine, and philosophy. One of his notable students was Antonio Musa Brassavola, who became a famous Italian physician.

Advertisements

Because of his expert knowledge in Greek, Arabic and Latin, he helped translate ancient Arabic and Greek medical texts into more accessible and readable Latin copies. He translated the works of Hippocrates and Galen and as a result of these translations their writings were accessible to more people. Leoniceno was the first known person to have written criticisms for Pliny the Elder’s Natural History, written in the first century AD.

His translations included a Latin version of “Ars medica”, by the second century Greek physician Galen in 1508. Leoniceno accompanied this translation with a controversial methodical prologue, so beginning the tradition of the “scientific method” for research.

Debates in Ferrara

Pliny the Elder’s works were considered to be strong reference material in medicine in the fifteenth and early sixteenth century, and the fact that Leoniceno took a different view to this work sparked curiosity and gained him attention. More particularly, he caught the attention of the court humanist Angelo Poliziano who employed the help of Pandolfo Collenuccio, a lawyer and a historian, to help defend the Roman author, Pliny the Elder from Leoniceno’s criticisms.

In 1492 Leoniceno published “De Plinii et plurium alorium medicorum in medicina erroribus”, an article where he pointed out the errors of medical proportions made by Pliny along with the medieval Arab practitioners of medicine. This publication by Leoniceno was quickly followed by Collenuccio’s “Pliniana defensio adversus Nicolai Leoniceni accusationem”, which was published a year later.

From 1492 to 1509, Leoniceno and Collenuccio published several pamphlets arguing for and against the ancient sources. One particular concern they discussed was how accurate Pliny’s translations were from the original Greek texts into Latin. Collenuccio himself agreed that “lost in translation” issues existed.

Leoniceno’s attacks on Pliny the Elder were not solely about translation issues and he mentioned a section of one of Pliny’s works which stated that the moon was bigger than the earth. Leoniceno considered that if Pliny was erroneous on a fact as fundamental as this, this was reason enough to examine Pliny’s work further to see if there were other factual errors.

Natural History Experience

Natural history knowledge in the fifteenth and early sixteenth century was typically acquired by studying ancient texts for reference and using the formulas given by earlier scholars. Leoniceno however, did not just blindly use existing ancient texts, but he confirmed the written text from his own firsthand accounts. He would obtain a copy of the ancient text and compare it with his own set of observations. This approach was indeed new; the beginning of the “scientific method”, but it faced several challenges, including the accuracy of the translated ancient texts.

According to Leoniceno’s beliefs, if Pliny had errors, other ancient works may also have errors. He trusted translations from Greek compared to Arab authors in his efforts to reform medical pedagogy.

Working on such texts was incredibly difficult, attempting for example, to confirm from long dead authors if the plant being observed in the present day was the same one being described before. Despite these challenges, Leoniceno proceeded with his researches. He focused on identifying the correct meaning of respected ancient texts instead of just adding to it. He insisted on this idea because he believed in “factual accuracy,” and that it was highly important because the health, as well as the life of men depended on the accuracy of facts written in ancient manuscripts.

Personal Library

Having been a scholar and a man who was interested in ancient works and translation for the betterment of the modernizing civilizations, Leoniceno also had his own collection of works. He used these for working on his comparisons and observations. Leoniceno lived during the time which some call “the age of the manuscript”, meaning that the main way to gain knowledge was to read existing texts and add to them rather than verify them. This was why Leoniceno’s new approach of verification and personal observation was a major contribution to medical texts.

After Leoniceno died in Ferrara in 1524, his library inventory listed 345 volumes, comprising of 482 individual finished works. Upon inspection, there were numerous translations and versions of just one single ancient text, and also many commentaries. His extensive library was testament to his in-depth research on the ancient texts and his scientific scholarly approach to learning and knowledge.

Advertisements
More from FamousScientists.org:
  • Galen
    Galen
  • andreas-vesalius
    Andreas Vesalius
  • niccolo-tartaglia
    Niccolo Tartaglia
  • Nicolaus Copernicus
    Nicolaus Copernicus
Advertisements

Search Famous Scientists

Scientist of the Week

  • Linda Buck: Discovered how we smell things

Recent Scientists of the Week

  • Jan Ingenhousz: Discovered photosynthesis
  • Barry Marshall: Overturned the Medical Establishment
  • Linus Pauling: Maverick Giant of Chemistry
  • William Röntgen: The Discovery of X-rays
  • Howard Florey: Brought penicillin to the world
  • Henrietta Leavitt: The key to the size of the universe
  • Archimedes: A mind beyond his time
  • Stanley Milgram: The infamous Obedience Experiments
  • C. V. Raman: Color change allows harm-free health check of living cells
  • Rosalind Franklin: Shape-shifting DNA
  • Robert Boyle: A new science is born: chemistry
  • Carl Woese: Rewrote Earth’s history of life
  • Alfred Wegener: Shunned after he discovered that continents move
  • Henri Poincaré: Is the solar system stable?
  • Polly Matzinger: The dog whisperer who rewrote our immune system’s rules
  • Otto Guericke: In the 1600s found that space is a vacuum
  • Alister Hardy: Aquatic ape theory: our species evolved in water
  • Elizebeth Friedman: Became the world’s most famous codebreaker
  • Evangelista Torricelli: We live at the bottom of a tremendously heavy sea of air
  • Eudoxus: The first mathematical model of the universe
  • James Black: Revolutionized drug design with the Beta-blocker
  • Inge Lehmann: Discovered our planet’s solid inner core
  • Chen-Ning Yang: Shattered a fundamental belief of physicists
  • Robert Hooke: Unveiled the spectacular microscopic world
  • Barbara McClintock: A Nobel Prize after years of rejection
  • Pythagoras: The cult of numbers and the need for proof
  • J. J. Thomson: Discovered the electron
  • Johannes Kepler: Solved the mystery of the planets
  • Dmitri Mendeleev: Discovered 8 new chemical elements by thinking
  • Maurice Hilleman: Record breaking inventor of over 40 vaccines
  • Marie Curie: Won – uniquely – both the chemistry & physics Nobel Prizes
  • Jacques Cousteau: Marine pioneer, inventor, Oscar winner
  • Niels Bohr: Founded the bizarre science of quantum mechanics
  • Srinivasa Ramanujan: Untrained genius of mathematics
  • Milutin Milankovic: Proved Earth’s climate is regulated by its orbit
  • Antoine Lavoisier: The giant of chemistry who was executed
  • Emmy Noether: The greatest of female mathematicians, she unlocked a secret of the universe
  • Wilder Penfield: Pioneer of brain surgery; mapped the brain’s functions
  • Charles Nicolle: Eradicated typhus epidemics
  • Samuel Morse: The telegraph and Morse code
  • Jane Goodall: Major discoveries in chimpanzee behavior
  • John Philoponus: 6th century anticipation of Galileo and Newton
  • William Perkin: Youthful curiosity brought the color purple to all
  • Democritus: Atomic theory BC and a universe of diverse inhabited worlds
  • Susumu Tonegawa: Discovered how our bodies make millions of different antibodies
  • Cecilia Payne: Discovered that stars are almost entirely hydrogen and helium

Top 100 Scientists

  • Our Top 100 Scientists

Our Most Popular Scientists

  • Astronomers
  • Biologists & Health Scientists
  • Chemists
  • Geologists and Paleontologists
  • Mathematicians
  • Physicists
  • Scientists in Ancient Times

List of Scientists

  • Alphabetical List

Recent Posts

  • Perfect Numbers and our Tiny Universe
  • What Happens when the Universe chooses its own Units?
  • Hipparchus and the 2000 Year-Old Clue
  • Darwin Pleaded for Cheaper Origin of Species
  • You Will Die For Showing I’m Wrong!
  • Getting Through Hard Times – The Triumph of Stoic Philosophy
  • Johannes Kepler, God, and the Solar System
  • Charles Babbage and the Vengeance of Organ-Grinders
  • Howard Robertson – the Man who Proved Einstein Wrong
  • Susskind, Alice, and Wave-Particle Gullibility




Alphabetical List of Scientists

Louis Agassiz | Maria Gaetana Agnesi | Al-BattaniAbu Nasr Al-Farabi | Alhazen | Jim Al-Khalili | Muhammad ibn Musa al-Khwarizmi | Mihailo Petrovic Alas | Angel Alcala | Salim Ali | Luis Alvarez | Andre Marie Ampère | Anaximander | Carl Anderson | Mary Anning | Virginia Apgar | Archimedes | Agnes Arber | Aristarchus | Aristotle | Svante Arrhenius | Oswald Avery | Amedeo Avogadro | Avicenna

Charles Babbage | Francis Bacon | Alexander Bain | John Logie Baird | Joseph Banks | Ramon Barba | John Bardeen | Charles Barkla | Ibn Battuta | William Bayliss | George Beadle | Arnold Orville Beckman | Henri Becquerel | Emil Adolf Behring | Alexander Graham Bell | Emile Berliner | Claude Bernard | Timothy John Berners-Lee | Daniel Bernoulli | Jacob Berzelius | Henry Bessemer | Hans Bethe | Homi Jehangir Bhabha | Alfred Binet | Clarence Birdseye | Kristian Birkeland | James Black | Elizabeth Blackwell | Alfred Blalock | Katharine Burr Blodgett | Franz Boas | David Bohm | Aage Bohr | Niels Bohr | Ludwig Boltzmann | Max Born | Carl Bosch | Robert Bosch | Jagadish Chandra Bose | Satyendra Nath Bose | Walther Wilhelm Georg Bothe | Robert Boyle | Lawrence Bragg | Tycho Brahe | Brahmagupta | Hennig Brand | Georg Brandt | Wernher Von Braun | J Harlen Bretz | Louis de Broglie | Alexander Brongniart | Robert Brown | Michael E. Brown | Lester R. Brown | Eduard Buchner | Linda Buck | William Buckland | Georges-Louis Leclerc, Comte de Buffon | Robert Bunsen | Luther Burbank | Jocelyn Bell Burnell | Macfarlane Burnet | Thomas Burnet

Benjamin Cabrera | Santiago Ramon y Cajal | Rachel Carson | George Washington Carver | Henry Cavendish | Anders Celsius | James Chadwick | Subrahmanyan Chandrasekhar | Erwin Chargaff | Noam Chomsky | Steven Chu | Leland Clark | John Cockcroft | Arthur Compton | Nicolaus Copernicus | Gerty Theresa Cori | Charles-Augustin de Coulomb | Jacques Cousteau | Brian Cox | Francis Crick | James Croll | Nicholas Culpeper | Marie Curie | Pierre Curie | Georges Cuvier | Adalbert Czerny

Gottlieb Daimler | John Dalton | James Dwight Dana | Charles Darwin | Humphry Davy | Peter Debye | Max Delbruck | Jean Andre Deluc | Democritus | René Descartes | Rudolf Christian Karl Diesel | Diophantus | Paul Dirac | Prokop Divis | Theodosius Dobzhansky | Frank Drake | K. Eric Drexler

John Eccles | Arthur Eddington | Thomas Edison | Paul Ehrlich | Albert Einstein | Gertrude Elion | Empedocles | Eratosthenes | Euclid | Eudoxus | Leonhard Euler

Michael Faraday | Pierre de Fermat | Enrico Fermi | Richard Feynman | Fibonacci – Leonardo of Pisa | Emil Fischer | Ronald Fisher | Alexander Fleming | John Ambrose Fleming | Howard Florey | Henry Ford | Lee De Forest | Dian Fossey | Leon Foucault | Benjamin Franklin | Rosalind Franklin | Sigmund Freud | Elizebeth Smith Friedman

Galen | Galileo Galilei | Francis Galton | Luigi Galvani | George Gamow | Martin Gardner | Carl Friedrich Gauss | Murray Gell-Mann | Sophie Germain | Willard Gibbs | William Gilbert | Sheldon Lee Glashow | Robert Goddard | Maria Goeppert-Mayer | Thomas Gold | Jane Goodall | Stephen Jay Gould | Otto von Guericke

Fritz Haber | Ernst Haeckel | Otto Hahn | Albrecht von Haller | Edmund Halley | Alister Hardy | Thomas Harriot | William Harvey | Stephen Hawking | Otto Haxel | Werner Heisenberg | Hermann von Helmholtz | Jan Baptist von Helmont | Joseph Henry | Caroline Herschel | John Herschel | William Herschel | Gustav Ludwig Hertz | Heinrich Hertz | Karl F. Herzfeld | George de Hevesy | Antony Hewish | David Hilbert | Maurice Hilleman | Hipparchus | Hippocrates | Shintaro Hirase | Dorothy Hodgkin | Robert Hooke | Frederick Gowland Hopkins | William Hopkins | Grace Murray Hopper | Frank Hornby | Jack Horner | Bernardo Houssay | Fred Hoyle | Edwin Hubble | Alexander von Humboldt | Zora Neale Hurston | James Hutton | Christiaan Huygens | Hypatia

Ernesto Illy | Jan Ingenhousz | Ernst Ising | Keisuke Ito

Mae Carol Jemison | Edward Jenner | J. Hans D. Jensen | Irene Joliot-Curie | James Prescott Joule | Percy Lavon Julian

Michio Kaku | Heike Kamerlingh Onnes | Pyotr Kapitsa | Friedrich August Kekulé | Frances Kelsey | Pearl Kendrick | Johannes Kepler | Abdul Qadeer Khan | Omar Khayyam | Alfred Kinsey | Gustav Kirchoff | Martin Klaproth | Robert Koch | Emil Kraepelin | Thomas Kuhn | Stephanie Kwolek

Joseph-Louis Lagrange | Jean-Baptiste Lamarck | Hedy Lamarr | Edwin Herbert Land | Karl Landsteiner | Pierre-Simon Laplace | Max von Laue | Antoine Lavoisier | Ernest Lawrence | Henrietta Leavitt | Antonie van Leeuwenhoek | Inge Lehmann | Gottfried Leibniz | Georges Lemaître | Leonardo da Vinci | Niccolo Leoniceno | Aldo Leopold | Rita Levi-Montalcini | Claude Levi-Strauss | Willard Frank Libby | Justus von Liebig | Carolus Linnaeus | Joseph Lister | John Locke | Hendrik Antoon Lorentz | Konrad Lorenz | Ada Lovelace | Percival Lowell | Lucretius | Charles Lyell | Trofim Lysenko

Ernst Mach | Marcello Malpighi | Jane Marcet | Guglielmo Marconi | Lynn Margulis | Barry Marshall | Polly Matzinger | Matthew Maury | James Clerk Maxwell | Ernst Mayr | Barbara McClintock | Lise Meitner | Gregor Mendel | Dmitri Mendeleev | Franz Mesmer | Antonio Meucci | John Michell | Albert Abraham Michelson | Thomas Midgeley Jr. | Milutin Milankovic | Maria Mitchell | Mario Molina | Thomas Hunt Morgan | Samuel Morse | Henry Moseley

Ukichiro Nakaya | John Napier | Giulio Natta | John Needham | John von Neumann | Thomas Newcomen | Isaac Newton | Charles Nicolle | Florence Nightingale | Tim Noakes | Alfred Nobel | Emmy Noether | Christiane Nusslein-Volhard | Bill Nye

Hans Christian Oersted | Georg Ohm | J. Robert Oppenheimer | Wilhelm Ostwald | William Oughtred

Blaise Pascal | Louis Pasteur | Wolfgang Ernst Pauli | Linus Pauling | Randy Pausch | Ivan Pavlov | Cecilia Payne-Gaposchkin | Wilder Penfield | Marguerite Perey | William Perkin | John Philoponus | Jean Piaget | Philippe Pinel | Max Planck | Pliny the Elder | Henri Poincaré | Karl Popper | Beatrix Potter | Joseph Priestley | Proclus | Claudius Ptolemy | Pythagoras

Adolphe Quetelet | Harriet Quimby | Thabit ibn Qurra

C. V. Raman | Srinivasa Ramanujan | William Ramsay | John Ray | Prafulla Chandra Ray | Francesco Redi | Sally Ride | Bernhard Riemann | Wilhelm Röntgen | Hermann Rorschach | Ronald Ross | Ibn Rushd | Ernest Rutherford

Carl Sagan | Abdus Salam | Jonas Salk | Frederick Sanger | Alberto Santos-Dumont | Walter Schottky | Erwin Schrödinger | Theodor Schwann | Glenn Seaborg | Hans Selye | Charles Sherrington | Gene Shoemaker | Ernst Werner von Siemens | George Gaylord Simpson | B. F. Skinner | William Smith | Frederick Soddy | Mary Somerville | Arnold Sommerfeld | Hermann Staudinger | Nicolas Steno | Nettie Stevens | William John Swainson | Leo Szilard

Niccolo Tartaglia | Edward Teller | Nikola Tesla | Thales of Miletus | Theon of Alexandria | Benjamin Thompson | J. J. Thomson | William Thomson | Henry David Thoreau | Kip S. Thorne | Clyde Tombaugh | Susumu Tonegawa | Evangelista Torricelli | Charles Townes | Youyou Tu | Alan Turing | Neil deGrasse Tyson

Harold Urey

Craig Venter | Vladimir Vernadsky | Andreas Vesalius | Rudolf Virchow | Artturi Virtanen | Alessandro Volta

Selman Waksman | George Wald | Alfred Russel Wallace | John Wallis | Ernest Walton | James Watson | James Watt | Alfred Wegener | John Archibald Wheeler | Maurice Wilkins | Thomas Willis | E. O. Wilson | Sven Wingqvist | Sergei Winogradsky | Carl Woese | Friedrich Wöhler | Wilbur and Orville Wright | Wilhelm Wundt

Chen-Ning Yang

Ahmed Zewail

Return to top of page

Famous Scientists - Privacy - Contact - About - Content & Imagery © 2025