High Quality Content by WIKIPEDIA articles! The Epistles of Plato are a series of thirteen letters traditionally included in the Platonic corpus. Their authenticity has been the subject of some dispute, and scholarly consensus has shifted back and forth over time. They were "generally accepted as genuine until modern times"; but by the close of the nineteenth century, many philologists (such as Richard Bentley, Christoph Meiners and, perhaps most notably, Friedrich Ast) believed that none of the letters were actually written by Plato. Now every letter except the First has some defenders of its authenticity. The Twelfth is also widely regarded as a forgery, and the Fifth and Ninth have fewer supporters than the others.