Download or read book Principal Doctrines written by Epicurus and published by Lulu.com. This book was released on 2016-01-30 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Epicurus posited a materialistic physics, in which pleasure, by which he meant freedom from pain, is the highest good. Serenity, the harmony of mind and body, is best achieved, through virtue and simple living. In addition to the Principal Doctrines, included here is the essay Epicureanism by William De Witt Hyde and an Epicurus biography by Charles Bradlaugh.