Kyriai doxai

work by Epicurus

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June 30, 2026

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The Kyriai Doxai, or "Principal Doctrines," is a collection of 40 aphorisms by the Greek philosopher Epicurus. These doctrines summarize his ethical philosophy, which centers on achieving happiness through simple pleasures, friendship, and a tranquil life.12

Epicurus taught that the greatest good is pleasure, defined as the absence of pain in the body and trouble in the mind. He believed that true happiness comes from limiting desires and living a modest life, free from fear of death or the gods. His philosophy, known as Epicureanism, emphasizes practical wisdom and the pursuit of a peaceful existence.2341

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Epicurus
Writings and assessment
…of his letters and the Kyriai doxiai (“Principal Doctrines”). The three letters are (1) To Herodotus, dealing with physics; (2) To Pythocles (probably a disciple’s abridgement), on meteorology; and (3) To Menoeceus, on ethics and theology. The Kyriai consists of 40 short aphoristic statements. Another major source is the papyri…
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…of his letters and the Kyriai doxiai (“Principal Doctrines”). The three letters are (1) To Herodotus, dealing with physics; (2) To Pythocles (probably a disciple’s abridgement), on meteorology; and (3) To Menoeceus, on ethics and theology. The Kyriai consists of 40 short aphoristic statements. Another major source is the papyri…
Read More