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
Philosophy encyclopedia that with printed philosophy journals, books and reference works. The authors are specialists in the areas in which they write, and are frequently leading authorities. Philosophy encyclopedia A philosophy encyclopedia is a comprehensive reference work that seeks to make available to the reader a number of articles on the subject of philosophy. Many paper and online encyclopedias of philosophy have been written, with encyclopedias in general dating back to the 1st century AD with Pliny the Elder's "Naturalis Historia". The "Encyclopédie" was a French encyclopedia edited by the philosopher and art critic Denis Diderot and the scientist, mathematician, and philosopher