René Descartes—philosopher, scientist, mathematician (and animal vivisectionist,…
February 1650 CE
René Descartes—philosopher, scientist, mathematician (and animal vivisectionist, who championed the notion that animals were unsentimental machines), and one of the key figures in the Scientific Revolution—has spent most of his adult life in the Dutch Republic.
He has been dubbed the "Father of Modern Philosophy", and much of subsequent Western philosophy is a response to his writings, which continue to be studied closely to this day.
In particular, his Meditations on First Philosophy continues to be a standard text at most university philosophy departments.
Descartes' influence in mathematics is also apparent, the Cartesian coordinate system—allowing geometric shapes to be expressed in algebraic equations—being named for him.
He is credited as the father of analytical geometry.
Awarded a pension by the King of France in 1647, Descartes had been interviewed by Frans Burman at Egmond-Binnen in 1648.
Christina, Queen regnant of Sweden from 1632, is the only surviving legitimate child of King Gustavus Adolphus of Sweden and his wife Maria Eleonora of Brandenburg.
As the heiress presumptive, at the age of six she had succeeded her father on the throne of Sweden upon his death at the Battle of Lützen in the Thirty Years' War.
Christina's good friend, ambassador Chanut, had corresponded with Descartes, discussing his ideas with Christina.
She had become interested enough to start corresponding with Descartes herself, and presently invited him to Sweden.
She warned him against the winter cold, suggesting he arrive in spring or summer.
He had instead arrived on October 4, 1649, and during the ensuing months the cold climate has bothered him considerably.
He resides with Chanut, and has long been accustomed to working in bed until noon, but with Christina's strict schedule he comes to the castle library at 5:00 AM to discuss philosophy with her and librarian Johan Freinsheim.
The lack of sleep could have severely compromised his immune system: the premises are icy, and on February 1, 1650, Descartes falls ill with pneumonia and dies ten days later.
Christina is distraught with guilt.