Cynic epistles
The Cynic epistles are a collection of letters expounding the principles and practices of Cynic philosophy mostly written, rewritten, or translated, in the time of the Roman Empire, but purporting to have been written by much earlier philosophers. == Letters and dating == The two main groups of letters are a set of 51 letters attributed to Diogenes of Sinope, and a set of 36 letters attributed to Crates of Thebes.