Principles of Philosophy

René Descartes wrote the book Principia Philosophiae (Principles of Philosophy). It is essentially a combination of the Discourse on Method and Meditations on First Philosophy. [1] It was composed in Latin, published in 1644, and dedicated to Descartes' long-time acquaintance Elisabeth of Bohemia. In 1647, a French edition (Les Principes de la Philosophie) was published. The book lays out nature's principles—the Laws of Physics—as Descartes saw them. Most significantly, it established the notion that an object's motion will be uniform and along a straight line in the absence of external forces. Newton took this theory from Descartes and included it into his own Principia; it is now commonly referred to as Newton's First Law of Motion. [2] The book was written largely to replace the Aristotelian curriculum that was then in use in French and British institutions. The work is the first fully complete, mechanistic description of the cosmos, and it gives a systematic statement of his metaphysics and natural philosophy. Introducing eReader; the best free eBook Reader classy ebooks. Do you usually read books on your Android device? Do you need a great eBook reader app that can replace your old PDF reader and give you some new stunning features while reading your favorite eBook? Then you will have to download eReader on your Android device because this app is just made for you. eReader classy ebook is a new free app that can be with you anytime and anywhere because it works as an offline eBook and you can still enjoy reading your favorite eBooks even if you don’t have a 3G, 4G, or Wi-Fi internet connection. eReader will give you a unique experience because it contains a very wide selection of amazing features that you will love. And the best thing is that our Full eBook app is free and you can enjoy reading any eBook you want without paying any subscription fees or monthly fees. eReader classy ebook has a great white and black background to let you read books day or night as much as you want without hurting your eyes and it will also let you edit the text size and choose any font you feel comfortable with. Not only that! Our app contains a very powerful PDF reader that will let you continue reading your PDF eBooks with all the stunning features that we have inside! eReader classy ebooks is a great eBook reader because it contains a great feature to interdict anyone from distracting you while reading an eBook and will also let you save any content or chapter you want as you can have easy access to it later. What are you waiting for? Download eReader and enjoy the best eBook Reader app ever! Concept of philosophy The degrees of knowledge Higher wisdom Doubt and certainty Meditations on first philosophy The tree of philosophy