The Consonants at Law - Sigma vs. Tau, in the Court of the Seven Vowels is an essay attributed to Lucian, and appearing in the Loeb Classical Library edition of the Works of Lucian. However the edition notes that it is "probably not by Lucian, but much later than his time", Lucian having died in 180 CE.[1] The content of the essay is a mock legal prosecution where the Greek letter Sigma petitions the court to sentence the Greek letter Tau to death by crucifixion: