Letters on the English author of "Novum Organum" and father of experimental philosophy. Letter 13 is about John Locke and his theories on the immortality of the soul. Letter 14 compares British philosopher Isaac Newton to French philosopher René Descartes. Upon his death in 1727, Newton was compared to Descartes in a eulogy performed by French philosopher Fontenelle. While the British did not appreciate this comparison, Voltaire argues that Descartes, too, was a great philosopher and mathematician. Letter 15 focuses on Newton's law of universal gravitation. Letter 16 talks about Newton's work with optics. Letter 17 discusses Newton's work with geometry and his theories
Father of surgery European Middle Ages. He wrote the surgical work "Chirurgia magna", which was used as a standard text for some centuries. He has been called the "father of modern surgery". The French surgeon Ambroise Paré (1517–1590) worked as a military doctor. He reformed the treatment of gunshot wounds, rejecting the practice, common at that time, of cauterizing the wound, and ligatured blood vessels in amputated limbs. His collected works were published in 1575. He has been called the "father of modern surgery". The Italian anatomist and surgeon Hieronymus Fabricius (1537–1619) taught William Harvey, and published a work on the valves of