Géza Csáth (pen name of József Brenner) was a writer, critic, music theoretician and medical doctor.

Most of his emblematic "dark" short stories were written during this period, often featuring utter physical or mental violence (such as fratricide, rape or seduction and abandonment of adolescent girls).

His condition further worsened, he became paranoid and by this time his addiction was the central problem of his life, significantly deteriorating his personal relations.

Inspired by Csáth's writings are the ballet "Comedia Tempio" of the dancer-choreographer Josef Nadj [2] and the opera "A Varázsló Halála" ("The Magician's Death") by the composer Alessio Elia (first performance Nyitott Műhely Auditorium - Budapest, 14 June 2006).

Janos Szaz's 2007 film "Opium: Diary of a Madwoman" features a doctor named Josef Brenner who is to some degree based on Csáth.