Principal Doctrines
tenants of Epicureanism

The Principal Doctrines (Greek: Κύριαι δόξαι, Kyriai doxai) are forty authoritative conclusions set up as official doctrines by the founders of Epicureanism: Epicurus of Samos, Metrodorus of Lampsacus, Hermarchus of Mitilene and Polyaenus of Lampsacus. The first four doctrines make up the Tetrapharmakos (Four Cures), which have sometimes been compared to Buddhism's Four Noble Truths.
Some of the Principal Doctrines ("PDs") are organized into groups and are meant to be studied together. PDs 10-13 discuss the Epicurean philosophy of science. PDs 18-21 explain the natural limits of desires and in time, and how the flesh is unable to learn these limits but the mind can. PDs 22-25 deal with the importance of the canon, or the Epicurean standard of truth. PDs 31-38 explain the Epicurean doctrines on justice based on mutual advantage and contractarianism. PDs 39-40 call for an intimate society of friends.
Since most of Epicurus' 37 books "On Nature" are lost to us, the Principal Doctrines are, together with Epicurus' Letters to Herodotus, Menoeceus, and Pythocles, the most authoritative writings in Epicureanism. The Principal Doctrines exemplify the Epicurean philosophers' practice of publishing summaries and outlines of their teachings for easy memorization.
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This entry incorporates text from “Principal Doctrines” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.