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Why did Diogenes of Oenoanda carve Epicurean teachings on a wall?

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Bronze bust of Epicurus with a full beard and draped clothing, displayed on a round inscribed base at the National Archaeological Museum of Naples. — Epicureanism Epicurus, bronze bust from a Greek original, c. 280–270 bce; in the Museo Archeologico Nazionale, Naples.

Diogenes of Oenoanda, an Epicurean philosopher active in the 2nd century CE, carved the teachings of Epicurus onto a portico wall to publicly disseminate the core tenets of his school.1

By inscribing these doctrines in a public space, Diogenes sought to share the philosophy's path to tranquility and happiness with others, reflecting the Epicurean view of their founder as a "liberator" and "saviour" whose "oracular words" provided a complete and satisfying guide for human life. This act ensured that the fundamental principles of Epicureanism—which emphasized the absence of pain, the importance of friendship, and a quiet, withdrawn life—remained accessible to those seeking to understand the nature of the universe and the means to achieve peace of mind.12