The author is unknown. In the only known manuscript, MS BNF Parisinus Graecus 2036 (10th century), the heading (f. 178v) reports "by Dionysius Longinus" (), whereas in the table of contents at f. 1v, the same
copyist wrote "by Dionysius or Longinus" (). When the manuscript was being prepared for printed publication, the work was initially attributed to
Cassius Longinus (). Since the correct translation includes the possibility of an author named "Dionysius", some have attributed the work to
Dionysius of Halicarnassus or
Dionysius Atticus, both writers of the 1st century BCE. There remains the possibility that the work belongs to neither Cassius Longinus nor either Dionysius but, rather, some unknown author writing under the
Roman Empire, likely in the 1st century. The error does imply that when the
codex was written, the trails of the real author were already lost. Neither author can be accepted as the actual writer of the treatise. Dionysius maintained ideas which are absolutely opposite to those written in the treatise; with Longinus, there are problems with chronology. Among further names proposed, are
Hermagoras of Temnos (a rhetorician who lived in Rome during the 1st century CE),
Aelius Theon (author of a work which had many ideas in common with those of
On the Sublime), and Pompeius Geminus (who was in epistolary conversation with Dionysius).
Dionysius of Halicarnassus Dionysius of Halicarnassus wrote under Augustus, publishing a number of works. Dionysius is generally dismissed as the potential author of
On the Sublime, since the writing officially attributed to Dionysius differs from the work
On the Sublime in style and thought.
Cassius Longinus Credited with writing a number of literary works, Longinus was a disciple of
Plotinus, and considered "the most distinguished scholar of his day." He received his education at Alexandria and then went to Athens to teach. He later moved to Asia Minor, where he achieved the position of advisor to
Zenobia, the queen of
Palmyra. Cassius is a dubious possibility for author of the treatise because he wrote in the 3rd century, and no literature later than the 1st century CE is mentioned. The latest is
Cicero, who died in 43 BCE and their work is now dated to the early 1st century CE. The work ends with a dissertation on the decay of oratory, a typical subject for the time when authors such as
Tacitus,
Petronius and
Quintilian, who also dealt with the subject, were alive. Cassius was executed by Aurelian, the Roman emperor who conquered Palmyra in 273 CE, on charges of conspiring against the Roman state. This was most likely because of what he had written for Queen Zenobia of Palmyra while she was still in power. Longinus is reported to have written answers for the Queen, which were used in response to Aurelian, the man who would soon rise to power as the Roman emperor. ==Contents==