On the Fabric of the Human Body (Preface)

Summary

De humani corporis fabrica libri septem (Seven Books on the Fabric of the Human Body) was printed at Basel by Johannes Oporinus in 1543, when its author, Andreas Vesalius, professor at Padua, was twenty-eight. Its seven books describe the bones and cartilages, the ligaments and muscles, the veins and arteries, the nerves, the organs of nutrition and generation, the heart and the organs of the chest, and the brain and the senses. More than two hundred woodcuts, cut with great care and placed beside the text, show skeletons and flayed 'muscle men' posed in landscapes, alongside detailed views of organs and instruments. The artists were probably trained in Titian's workshop in Venice; Jan Steven van Calcar is often named, though the attribution of particular plates is debated. This library entry centres on the preface, a dedicatory letter to the Emperor Charles V, which explains why the book was needed. Vesalius argues that ancient physicians practised all three parts of medicine, diet, drugs and the work of the hands, but that later physicians kept only the prescribing of diets and remedies, leaving the preparation of medicines to apothecaries and surgery to barbers. Anatomy decayed as a result. In the universities, he complains, one man read Galen aloud from a high chair while an unlearned barber cut the body below, so that the professor, like a chattering jackdaw, spoke of things he had never examined and the dissector could not explain what he exposed. Vesalius claims he has put his own hand to dissection and found that Galen, whom he honours as the greatest of the ancient anatomists, had described the bodies of apes and other animals rather than of human beings, so that his account contains many errors. He defends the use of pictures, comparing them to the diagrams of geometry, and anticipates resistance from older Galenists. The Fabrica itself corrects Galen on points such as the human lower jaw, which it shows as a single bone, and the sternum, and it doubts that blood passes through the wall between the ventricles of the heart, a doubt stated more strongly in the revised edition of 1555. The book became the foundation of modern anatomy, though later anatomists in turn corrected Vesalius. No public-domain English translation of the preface has been identified for the library, so no text is stored and nothing is quoted here; the summary and guide describe the preface in paraphrase.

Plot or Argument

• Dedication to Charles V

  Vesalius addresses the emperor as patron of learning and offers him a work on the structure of the human body, the most noble of subjects for a physician.

• How medicine was divided

  Ancient medicine joined regimen, drugs and handwork; later physicians abandoned the hand, giving the compounding of drugs to apothecaries and operations to barbers, and so lost the knowledge of the body on which all three depend.

• The decay of anatomical teaching

  In the schools, professors read from Galen in a high chair while barber-dissectors cut, with neither able to correct the other; the result, Vesalius says, was confident talk about things never seen.

• Galen and the apes

  Vesalius praises Galen but argues from his own dissections that Galen worked chiefly on animals, especially apes, and that his followers merely abridged him, perpetuating his errors about human structure.

• The plan of the seven books

  The preface outlines the seven books, from bones to brain, and explains the role of the illustrations, which let the reader see the parts as on a dissecting table.

• Defending pictures and novelty

  Vesalius answers those who think pictures unnecessary, compares them with the diagrams of geometry, and expects opposition from older men loyal to Galen.

Lessons

• The hand and the head belong together

  Vesalius argues that medicine declined when learned physicians stopped working with their own hands and left the body to barbers. His remedy is a physician who both reads and dissects, joining book learning to direct observation.

  • Why does Vesalius think dividing medicine among physicians, apothecaries and barbers harmed it?
  • Are there fields today in which theory and practice have drifted apart in a similar way?

• Honour a master by testing him

  Vesalius calls Galen the prince of anatomists even while correcting him. He presents himself not as Galen's enemy but as one returning to the ancient practice of dissection that Galen himself valued.

  • How can a student respect an authority while showing that he made mistakes?
  • Why might Galen's followers have been more rigid than Galen himself?
  • What made it possible for Vesalius to see what earlier readers had missed?

• Seeing is part of knowing

  The Fabrica's woodcuts were planned with the text and placed beside it. Vesalius argues that pictures, like geometric diagrams, fix in the mind what words alone cannot, and the book's images shaped anatomical illustration for centuries.

  • Why does Vesalius compare anatomical pictures to geometrical diagrams?
  • What are the risks of learning from pictures rather than from the thing itself?

• The body as a work of wonder

  Like Galen before him, Vesalius writes of the body as a marvellous fabric, a made thing, and the title itself suggests craftsmanship. Anatomy was for him both a medical discipline and a way of contemplating the order of the human frame.

  • What does the word 'fabric' suggest about how Vesalius saw the body?
  • Do the posed skeletons and muscle men in landscapes suggest anything beyond anatomy, such as reflection on mortality?

Context

Renaissance humanists had recovered Galen's Greek texts and printed them in Latin, and Paris and Padua taught anatomy chiefly from Galen. Public dissections were rare, ceremonial events using the bodies of executed criminals. Artists such as Leonardo da Vinci had studied anatomy privately, and printing now made accurate, repeatable images possible. Vesalius worked in this setting, using both humanist learning and his own dissections.

Composition

Vesalius prepared the Fabrica in Padua between about 1539 and 1542, using bodies supplied by the Paduan authorities, and sent the woodblocks over the Alps to Basel, where Oporinus printed the folio in 1543. The Epitome, a shorter version with large plates for students, appeared the same year and was dedicated to the future Philip II. A revised second edition followed in 1555.

Reception

Some Galenists, including Vesalius's former teacher Jacobus Sylvius, attacked the book, while younger anatomists at Padua, such as Realdo Colombo and Gabriele Falloppio, built on and corrected it. The plates were widely copied. Through the Padua anatomical tradition the Fabrica led toward William Harvey, who studied there, and its title-page dissection scene became a classic image of the new anatomy.

Comparisons

• galen-selected-works

  Galen's anatomy, based largely on animal dissection, was the authority Vesalius both revered and corrected; reading On the Natural Faculties beside the Fabrica's preface shows two physicians who each insisted that medicine must rest on the physician's own observation.

• harvey-on-the-motion-of-the-heart-and-blood

  Harvey, trained at Padua in the tradition Vesalius founded, pressed Vesalius's doubt about pores in the septum of the heart to a new account of the circulation of the blood.

• hippocratic-writings

  Vesalius appeals to the ancient Greek ideal of a physician who practised regimen, drugs and surgery together, an ideal he finds in the Hippocratic tradition.

• copernicus-on-the-revolutions

  Published in the same year, 1543, Copernicus's book and the Fabrica are often paired as twin landmarks of the Scientific Revolution, each revising an ancient authority, Ptolemy and Galen respectively.

• novum-organum

  Bacon's call to learn from nature rather than from books alone was anticipated in Vesalius's insistence that anatomy be learned at the dissecting table.

Quotes

For Students

A reading companion for classical Christian high school students. See the student guide.

Reading Guide

Watch for

• Vesalius's account of how the three parts of ancient medicine (diet, drugs and handwork) were split among physicians, apothecaries and barbers.
• The picture of a university anatomy lesson, with the lecturer in his chair and the barber at the table, and the image of chattering jackdaws.
• The way Vesalius praises Galen even while arguing that Galen dissected apes rather than humans.
• His defence of illustrations and the comparison with the diagrams of geometry.
• His remark that he is not yet twenty-eight and expects opposition from older Galenists.

Key terms and names

Fabrica

Latin for a made structure or workmanship; the title presents the body as a crafted fabric of parts.

Galenism

The system of anatomy, physiology and therapy derived from Galen, dominant in European medical schools until the seventeenth century.

Barber-surgeon

A craftsman who shaved, bled, set bones and performed operations, usually without university training.

Dissection

The cutting open of a dead body to study its structure; in Vesalius's day public dissections used executed criminals.

Rete mirabile

A network of blood vessels at the base of the brain in some animals, which Galen ascribed to humans and Vesalius could not find.

Epitome

The short companion to the Fabrica, published in 1543 with large plates for students.

Seminar Questions

1. Comprehension According to the preface, how did medicine come to be divided among physicians, apothecaries and barbers?
2. Comprehension What does Vesalius say was wrong with the way anatomy was taught in the universities of his day?
3. Comprehension Why does Vesalius think Galen made errors about the human body?
4. Interpretation Vesalius presents his reform as a return to ancient practice rather than a break with it. Why might he have framed it that way, and is the framing accurate?
5. Interpretation How do the Fabrica's illustrations support or extend the argument of the preface?
6. Interpretation Why might older physicians have resisted Vesalius's corrections even when the evidence was before them?
7. Big Question When should a student trust a long-standing authority, and when should he insist on seeing for himself?

Faith Connections

• Psalm 139:13-15 (Scripture)

  The psalmist praises God for being fearfully and wonderfully made and 'curiously wrought' in secret. Vesalius's careful description of the body's fabric gives a physician's view of the same workmanship.

• Job 10:11 (Scripture)

  'Thou hast clothed me with skin and flesh, and hast fenced me with bones and sinews.' Job's description of the body's layers parallels the order of the Fabrica, from bones to sinews and flesh.

• 1 Corinthians 12:14-26 (Scripture)

  Paul describes the body as many members each needed by the others. Vesalius's complaint that medicine suffered when its parts were separated echoes this picture of members that cannot say to one another, 'I have no need of thee.'

• Gregory of Nyssa, On the Making of Man (Church Fathers)

  Gregory reflects on the structure of the human body as suited to a rational soul made in God's image. Vesalius's anatomy offers the detailed observation that such reflection later drew upon.

Logic and Rhetoric

Central argument: Medicine once united regimen, drugs and the work of the hands; when physicians abandoned handwork, knowledge of the body decayed and teaching came to rely on reading Galen, who had described animals rather than humans; therefore anatomy must be restored by physicians who dissect human bodies themselves, and the results set out in a full description with accurate pictures.

Rhetorical device: satirical description. Vesalius sketches the university anatomy lesson, the lecturer perched high in his chair talking like a jackdaw about things he has never examined while an unlettered barber cuts below, making the old method look absurd before he argues against it.

Debate: Resolved: Physicians should be trained by their own hands-on observation rather than by the authority of texts.

Writing Prompts

Essay: Vesalius argues that anatomy declined because physicians left handwork to barbers and learned from books instead of bodies. Explain his diagnosis and remedy, and argue whether his reform was a revolution against Galen or a return to Galen's own methods.

Comparison with Galen: Selected Works: Galen insisted that the best physician be a philosopher trained in observation; Vesalius used observation to correct Galen. Compare the two physicians' views of how medical knowledge should be gained, and argue what Vesalius owed to the man he corrected.

Medical Lens

The Fabrica is a founding text of modern anatomy and a central document in the history of surgery and medical education. The preface diagnoses a professional problem: the separation of learned physic from manual surgery and pharmacy, which left university physicians ignorant of the body and barber-surgeons without theory. Vesalius's reform, the professor who dissects with his own hands while lecturing, reshaped anatomical teaching. His argument that Galen had described animal rather than human anatomy marked a turn from textual authority to observation, though Vesalius kept much of Galen's physiology, including the humours and spirits. The Fabrica's account of the brain, nerves and sense organs in Book VII matters for the history of neuroanatomy; Vesalius found no rete mirabile at the base of the human brain, a structure Galen had described from animals and placed at the centre of the production of animal spirits. Bodies came from executed criminals, a source of anatomical material that raised ethical and legal questions in later centuries.

• Preface to Charles V

  The division of medicine among physicians, apothecaries and barbers, and its consequences for knowledge of the body.

  Physicians Doctors Surgery
• Preface to Charles V

  Satire of lecture-room anatomy, with the professor reading Galen from a chair while an unlearned barber dissects.

  Anatomy Dissection Physicians Doctors
• Preface to Charles V

  Argument that Galen dissected apes and other animals, so that many of his anatomical claims do not hold for humans.

  Ancient Medicine Anatomy Dissection
• Fabrica, Book VI

  Description of the heart and doubt that blood sweats through the septum between the ventricles, sharpened in the 1555 edition.

  Anatomy Dissection Humoral Medicine
• Fabrica, Book VII

  The brain, its ventricles and the sense organs, including the absence in humans of the rete mirabile described by Galen.

  Anatomy Dissection

Creative Prompts

• Classroom

  Show students a reproduction of the Fabrica's title page and the muscle-men plates, and have them list what the images say about who should teach anatomy and how.

• Essay

  Vesalius blamed the decline of anatomy on the separation of thinking from handwork. Write an essay on whether a modern profession you know keeps theory and practice together or apart.

• Dialogue

  Write a conversation in Paris around 1545 between Vesalius and his old teacher Jacobus Sylvius, who defended Galen against his former student.

Further Reading

• Andreas Vesalius of Brussels, 1514–1564, C. D. O'Malley

• The Illustrations from the Works of Andreas Vesalius of Brussels, J. B. de C. M. Saunders and Charles D. O'Malley

• The Fabric of the Human Body: An Annotated Translation of the 1543 and 1555 Editions, Daniel H. Garrison and Malcolm H. Hast (trans.)

• The Anatomical Renaissance, Andrew Cunningham