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
Romanian philosophy such as Ciprian Mihali and Bogdan Ghiu. Although Mihali is more interested in the phenomenological analysis of the quotidian, his thinking is deeply rooted in French post-Structuralism. Ghiu, through his translations on Deleuze and various essays spread the influence of postmodern and poststructuralist French philosophy in Romania, although it remains rather subdued, without any mature philosophers. Analytic philosophy has developed mostly at the University of Bucharest, by such names as Mircea Dumitru, Adrian-Paul Iliescu, Adrian Miroiu, Valentin Mureşan, Mihail-Radu Solcan. Mircea Dumitru wrote on philosophical logic, the philosophy of language and the philosophy of mind. Iliescu is a political philosopher