Kepler and Sir Thomas Browne

There are a surprising number of hitherto undetected connections between the German mathematician, astronomer, and astrologer Johannes Kepler (1571-1630) to the English physician and philosopher Sir Thomas Browne (1605-1682).

Kepler’s life, like Browne’s, spanned a watershed in scientific thought. Kepler not only advocated  rational inductive science and the astronomical discoveries of Galileo but also augmented his scientific enquiries with Neoplatonic and Pythagorean ideas. Kepler’s astronomical discoveries were as much structured upon precise mathematical calculation as deeply held theological beliefs and God-given revelation; his scientific perspective, not unlike Browne’s own scientific perspective a full half century later, were an admixture of Christian awe of the Creation, precise mathematical analysis and Platonic and Pythagorean concepts of the ancient Greek world.

Listed as once in Sir Thomas Browne’s library is an edition of Kepler’s first published book, Mysterium Cosmographicum (Prague 1596) [1]. Kepler's ‘Mysteries of the Cosmos’ is the direct result of a vision the young mathematician experienced in which he believed God’s geometrical plan of the universe had been revealed to him. In his mystical revelation Kepler discovered the geometric solids as first described by Plato, the tetrahedron (4 sided) cube (6 sided) octahedron (8 sided) dodecahedron (12 sided) and icosahedron (20 sided) could each be uniquely represented by spherical orbs; each solid nesting within and encased in a sphere, would in total produce six layers, corresponding to the six known planets—Mercury, Venus, Earth, Mars, Jupiter, and Saturn. By ordering the Platonic solids in their correct numerical sequence Kepler also discovered  that the spheres could be placed at intervals which corresponded to his own calculations of the relative size of each planet’s path, as each planet circled the Sun.

                                                    

Kepler’s great patron was the Holy Roman Emperor Rudolph II (1552 -1612). During his long reign Rudolph II gathered at his relocated court at Prague, some of the most remarkable figures in the world of art and science. He was a generous patron to artists of the Mannerist school such as Archimboldo, Bartholomeus Spranger and Adrian de Vries, and to the astronomers Kepler and Tycho Brahe. Indeed, Rudolph II's pairing of the observational genius of the Dane Tycho Brahe to the mathematical gifts of Kepler has been considered his major contribution towards the advancement of astronomy.

Kepler’s residence at the court of the Holy Roman emperor from 1600 to 1612 resulted in his naming and dedicating his major work of scientific notation of planetary motion, the Rudulphine Tables, to Emperor Rudolph. Other visitors to the court of the melancholic, alchemy-loving Emperor and connoisseur of the arts include the Elizabethan mathematician and major figure of esotericism, John Dee (1527 -1608)  and the poet Elizabeth Jane Weston.  

The division between astrology and astronomy in Kepler’s day was quite blurred and not as sharply delineated as nowadays. Throughout his life Kepler supplemented his income by regularly publishing calendars which predicted future events from astrology. For the year 1595 he prophesied a particularly cold winter, an attack by the Turks from the south and a peasant uprising: all of which occurred.

Ars Magna Lucis et Umbrae

The 1711 catalogue of the library of Sir Thomas Browne indicates that the German Jesuit polymath Athanasius Kircher was one of the physician-philosopher's favourite authors. The subject-matter of Kircher’s many books - optics, alchemy, comparative religion, antiquities, the unusual and even down-right bizarre to modern sensibilities, reflect several shared interests and a close perspective in outlook between two of the seventeenth century's greatest polymaths.

Athanasius Kircher’s books are well-represented in Thomas Browne's library, including his optical work Ars Magna Lucis et Umbrae (1646) whose frontispiece is above. Kircher’s The Great Art of Light and Shadow was in all probability, one of the earliest of books purchased by Browne since commencing his residency in Norwich, after the physician-philosopher's marriage in 1642. Published the same year as Browne’s encyclopedic endeavour to promote scientific understanding, Pseudodoxia Epidemica first saw light during the endgame of the English civil war in 1646. Further revised editions of Browne's major contribution to the scientific revolution appeared until the last edition in 1672. 

The frontispiece of Kircher's The Great Art of Light and Shadow depicts a personification of the sun, with the symbols of the zodiac covering his body, below him sits a double-headed eagle. On the right,  a woman as a personification of the moon and covered in stars, below her sits two peacocks. Rays of light hit various lenses which reflects Kircher's optical discoveries. The frontispiece (above) also depicts Kircher's sources of knowledge in descending order of clarity: sacred authority, reason, sense (aided by instruments) and profane authority. Browne in his Pseudodoxia lists authority, experience and reason as his primary sources of knowledge.

Kircher discovered that by placing a lens between a screen and a mirror which had been written on, a sharp but inverted image would appear on the screen. Using a spherical water-filled flask as a condenser to concentrate the light. Images and texts painted on the mirror's surface could be projected by light from a candle after dark. These optical demonstrations eventually resulted in the birth of the magic lantern, an invention which is sometimes attributed to Kircher.

A near exact contemporary of  Thomas Browne (1605-82) Athanasius Kircher (1601-1680) has been described as ‘the supreme representative of Hermeticism within post-Reformation Europe’. Although now known to have been often mistaken in many of his theories, especially in comparative religion, Kircher, like Browne in his Pseudodoxia Epidemica disseminated and popularized much new scientific knowledge, including recent discoveries confirmable to amateur scientists in the field  of optics and magneticism. Browne  devoted several chapters on his own experiments in  magneticism and static electricity  in Book 2 of Pseudodoxia Epidemica .

Kircher studied philosophy, mathematics, Greek and Hebrew, as did Browne. But above all else he shared with Browne a deep interest in comparative religion and the esoteric. Browne even respecting Kircher’s knowledge in the field of comparative religion enough to describe him as -   'that eminent example of industrious Learning, Kircherus'.

Kircher believed that Egyptian paganism was the fount of virtually all other beliefs and creeds whether Greek, Roman, Hebrew, Chaldean or even Indian, Japanese, Aztec and Inca. His  three jumbo-sized volumes of perceived syncreticism in comparative religion Oedipus Egypticus (Rome 1652-56) of over 2000 pages are a land-mark in printing and esoterica. Given the fact that many books of western esoterica are listed as once owned by Browne it’s not too surprising that Kircher’s vast work Oedipus Egypticus was once in his library. The Norwich-based physician-philosopher alluded to the Bembine Tablet of Isis which is reproduced by Athanasius Kircher in Oedipus Egypticus  in his own work of Hermetic phantasmagoria  The Garden of Cyrus (1658).

In addition to being scholars of science and esoterica Kircher and Browne were also extremely interested in  accounts of far-way lands such as China. This is reflected in fact that the latest  reports from traveller’s, mostly missionaries returning to Rome from China, were collected and compiled by Kircher in his China Illustrata  (Amsterdam 1667). Although the earliest mention of the Chinese root-vegetable ginseng occurs in the Oxford English dictionary dated 1654, Sir Thomas Browne remembered the first detailed description of the root-vegetable Ginseng from his reading of Kircher's China Illustrata in a letter dated April 2nd 1679 to Edward Browne -

Deare Sonne, -You did well to observe Ginseng. All exotick rarities, especially of the East , the East India trade having encreased, are brought in England, and the profitt made thereof. Of this plant Kircherus writeth in his China illustrata, pag. 178, cap. "De Exoticis China plantis".

Optica

 Men that look upon my outside, perusing only my condition, and fortunes, do err in my altitude; for I am above Atlas his shoulders.

Another illustration from a book once in the vast library of Sir Thomas Browne Opticorum libri sex philosophis juxta ac mathematicis utiles or 'Six Books of Optics, useful for philosophers and mathematicians alike' by François Aiguilon (1567-1617) a Belgian mathematician, physicist and architect . 

Aiguilon's book Optica (1613) was notable for containing the principles of stereographic and orthographic projections, as depicted above. He gave the stereographic projection its current name in his 1613 work.  One of the most important uses of stereoscopic projection was in  the representation of celestial charts which were increasingly necessary for  accurate navigation, exploration and trade-routes, especially for the empire-building of sea-faring nations such as the Dutch and British nations during the 17th century.

Aguilon commissioned the famous Flemish painter Peter Paul Rubens (1577-1640) to illustrate his book. Throughout Aigulion's treatise on optics, Rubens depicts three cherubs who act as guides and tutelary figures to reveal the nature of optical phenomena to the enquirer into Nature's properties. 

Just as the study of botany aided the physician in the field of medicine, enhancing his appreciation of the senses through scent and beauty as well as his understanding of nature's organic properties, so too the study of optics held both a scientific and a mystical dimension for the Natural philosopher. The study of optics with its emphasis upon Light and Dark, the visible and  invisible worlds and the deceptive nature of appearances has much in common with the spiritual symbolism of Gnosticism and Hermetic philosophy; symbolism involving Light and Darkness, one of the most richly-developed forms of spiritual imagery can be found in the sacred texts of all world religions, including Christianity. One of the most famous of all optical-spiritual imagery often cited as Gnostic in origin, occurs in the words of Saint Paul -

For now we see but a poor reflection as in a mirror;  then we shall see face to face. - 1 Cor. 13 v. 12

Inward Optics

Behold thyself by inward Optics and the Crystalline of thy Soul. Strange it is that in the most perfect sense there should be so many fallacies, that we are fain to make a doctrine, and often to see by Art. But the greatest imperfection is in our inward sight, that is, to be Ghosts unto our own Eyes, and while we are so sharp-sighted as to look through others, to be invisible unto our selves; for the inward Eyes are more fallacious than the outward. The Vices we scoff at in others laugh at us within our selves. Avarice, Pride, Falsehood lay undiscerned and blindly in us, even to the Age of blindness: and therefore, to see our selves interiorly, we are fain to borrow other Men's Eyes; wherein true Friends are good Informers, and Censurers no bad Friends. - C.M.Part 3:15

If Sir Thomas Browne had ever only been known as the author of  Christian Morals his name in English literature would have been  celebrated. As it is, his late work remains the least-known of his literary oeuvre. But it seems we're are lucky to even have the text of the late advisory moralistic essay  at all, the preface to the 1716 posthumously published work informing the reader that, 'The Reason why it was not Printed sooner is, because it was unhappily Lost, by being Mislay'd among Other MSS'. One shudders to think what else of Browne's writings may have been lost or mislaid due to haphazard  literary executorship.

Written from the vantage-point of a life-time's experience as a doctor, the entire essay is an  advisio on how to live a sound Christian life. Highly original optical imagery is employed in the essay along with many of the symbols and images which fascinated the Norwich physician throughout his life. Browne may well have had Luke 6:42 in mind - developing and expanding upon the scripture verse with typical profound psychological insight and artistry. 

How can you say to your brother, 'Brother, let me take the speck out of your eye,' when you yourself fail to see the plank in your own eye? You hypocrite, first take the plank out of your eye, and then you will see clearly to remove the speck from your brother's eye. - Luke 6:42

Irradiation of Peacock feathers

Near the end of the sixth book of Browne's Pseudodoxia Epidemica there's a good portrait of  the worthy 17th century Norwich physician engaged upon his essentially Baconian  quest.

At the  conclusion of a chapter entitled A further digression upon blackness there is evidence of the refinement of Browne's senses and  his appreciation of beauty. In  chapter 12 of book  6 Browne alludes to one of his numerous chymical experiments. Several paragraphs are devoted to the use and effects of  various acids and vitriol, the causes of blackness in nature and speculation upon  its causes and origins in human skin. 

The study of optics was also of particular interest to Browne and optical imagery  frequently occurs in  his writings. One strongly suspects his use of the word irradiation, ' to shine brightly' (the near synonymous iridescence is later in origin, 18th century from iris, rainbow) to describe the well-known optical effect when viewing a peacock's feather, is one of Browne's many medical-scientific neologisms. These include the words medical, pathology, hallucination, electricity and ambidextrous, as the complete Oxford English dictionary testifies.

In a tone of near mystical apprehension and barely suppressed joy, Browne concludes his scientific investigations upon blackness, waxing lyrical upon  the beauty of colour thus-.

And this is also apparent in Chymical preparations. So Cinaber becomes red by the acide exhalation of sulphur, which otherwise presents a pure and niveous white. So spirits of Salt upon a blew paper make an orient red. So Tartar or vitriol upon an infusion of violets affords a delightfull crimson. Thus it is wonderful what variety of colours the spirits of Saltpeter, and especially, if they be kept in a glass while they pierce the sides thereof; I say, what Orient greens they will project: from the like spirits in the earth the plants thereof perhaps acquire their verdure. And from such salary irradiations may those wondrous varieties arise, which are observable in Animals, as Mallards heads, and Peacocks feathers, receiving intention or alteration according as they are presented unto the light. Thus Saltpeter, Ammoniack and Mineral Spirits emit delectable and various colours; and common Aqua fortis will in some green and narrow mouthed glasses, about the verges thereof, send forth a deep and Gentianella blew.