General

Of Peace of Mind

by Lucius Annaeus Seneca

LibriVoxInternet ArchiveLoyal Books1h 22m

Free options are listed first. Book Search Party does not host audio.

Free sources are not affiliate links.

Listen for free

LibriVox
Free public-domain recording.
Download MP3 ZIP (opens in a new tab)Read the text (opens in a new tab)
Listen at LibriVox (opens in a new tab)
Internet Archive
Free public-domain recording.
Listen at Internet Archive (opens in a new tab)
Loyal Books
Free public-domain recording.
Listen at Loyal Books (opens in a new tab)

How to maintain a tranquil mind amongst social upheaval and turmoil, addressed to Serenus. (Introduction by Jonathan Hockey)

Summary source: LibriVox / Wikipedia.

Public-domain status depends on your jurisdiction. Check the source page before downloading or redistributing.