I don't know how many of you are familiar with Standard Ebooks, but it is a nonprofit which produces carefully edited, nicely produced editions of classic public domain texts. When I am looking for a public domain book, I generally look there first. Completely unrelated to my interest in Epicureanism, I love Sinclair Lewis, and the site has four of his classic novels.
Anyway, I am on the email list which announces new Standard Ebook titles each month and one of the new ones for August is
Marius the Epicurean by Walter Pater, which as the title suggests is an historical novel about a man in the Roman Empire who is particularly interested in Epicureanism but also explores other philosophies; the Wikipedia article on the book may be useful for anyone trying to decide whether to read it.
Amazon's send to Kindle feature now supports ePub, one of Standard Ebooks' file formats, and there are nice ereaders for smartphones, such as ReadEra, which is my favorite.