What is it about?
René Descartes (1596-1650) was, by his own admission, no artist — but the roughly 315 illustrations scattered across his correspondence reveal a thinker who drew liberally to communicate his ideas, spanning mathematics, music, optics, cosmology, and medicine. Of these, about 145 survive in his own hand, yet they have received little attention. This paper changes that. Tracing the history of these images from Descartes's original letters through centuries of editions — including two previously unknown autograph drawings published here for the first time — it uncovers a rich story of drawing, redrawing, and misunderstanding. Three case studies take center stage: illustrations of circular motion, a burning glass, and the mysterious dual motion of a vibrating string. Each reveals how editors across the centuries reshaped Descartes's visual thinking, sometimes clarifying it, sometimes distorting it beyond recognition. The paper shows that text and image in Descartes are inseparable — and the obvious can sometimes only be seen when it is pictured.
Featured Image
Photo by Alexandr Popadin on Unsplash
Why is it important?
There is a certain irony in the uneven attention paid by scholars to the illustrations in Descartes’s works and those in the correspondence. While much ink has been spilt over the images for Descartes's L’Homme for example, for which we have no illustrations by Descartes’s own hand and only one or two that are said to be based on an autograph figure, much less interest has been shown in the nearly 150 autograph figures and diagrams in the letters. The paper demonstrates the importance of the autograph drawings. They tell us how Descartes himself pictured what he wrote. The history of the illustrations, from autograph to print, shows how various editors, from the seventeenth century up to the present day, have reproduced and revised the illustrations in the correspondence, thus shaping their reception, interpretation, and (mis)understanding. What this paper shows, above all, is that these neglected images repay close attention.
Perspectives
I first remarked a mismatch between text and illustration in one of Descartes’s letters many years ago. In the letter Descartes explains why, in a specific experimental set-up, water will not flow out of a syphon, but looking at the accompanying figure, it was clear to me that the water would certainly flow down. Once I was able to consult the original letter, I noticed that Descartes himself had drawn the figure correctly, and that the mistake was the editors’ of the standard edition of the correspondence. While preparing a new edition of Descartes’s letters, I discovered that that was certainly not the only mistake in the illustrations of the standard edition, and, moreover, that the images to the same letter show substantial differences between the various editions over the centuries. It is perhaps fitting that Descartes, who doubted his own drawing abilities, should have proved the more reliable draughtsman.
Erik-Jan Bos
CNRS / Université Paris-Cité
Read the Original
This page is a summary of: The Drawings in Descartes’s Letters: From Autograph to Print, January 2026, De Gruyter,
DOI: 10.1163/9789004732254_003.
You can read the full text:
Contributors
The following have contributed to this page
