Age of Enlightenment Louis XV until the French Revolution. If taken back to the mid-17th century, the Enlightenment would trace its origins to Descartes' "Discourse on the Method", published in 1637. In France, many cited the publication of Isaac Newton's "Principia Mathematica" in 1687. It is argued by several historians and philosophers that the beginning of the Enlightenment is when Descartes shifted the epistemological basis from external authority to internal certainty by his "cogito ergo sum" published in 1637. As to its end, most scholars use the last years of the century, often choosing the French Revolution of 1789 or the beginning of
Mr. Cogito Laments On The Pettiness of Dreams"), "Pan Cogito a poeta w pewnym wieku" ("Mr. Cogito And A Poet Of A Certain Age"), "Pan Cogito a pop" ("Mr Cogito And Pop Music"), "Pan Cogito o magii" ("Mr. Cogito On Magic"), "Pan Cogito spotyka w Luwrze posążek Wielkiej Matki" ("Mr. Cogito Encounters A Figurine Of The Great Mother In The Louvre"), "Pan Cogito opowiada o kuszeniu Spinozy" ("Mr. Cogito Narrates The Temptation Of Spinoza"), "Pan Cogito otrzymuje czasem dziwne listy" ("Mr Cogito Occasionally Receives Strange Letters"), "Rozmyślania Pana Cogito o odkupieniu" ("Mr Cogito's Meditations On Redemption"), "Pan Cogito szuka rady" ("Mr. Cogito