Ubayd Zakani introduced satire in Persian literature during the 14th century. His work is noted for its satire and obscene verses, often political or bawdy, and often cited in debates involving homosexual practices. He wrote the "Resaleh-ye Delgosha", as well as "Akhlaq al-Ashraf" ("Ethics of the Aristocracy") and the famous humorous fable "Masnavi Mush-O-Gorbeh" (Mouse and Cat), which was a political satire. His non-satirical serious classical verses have also been regarded as very well written, in league with the other great works of Persian literature. Between 1905 and 1911, Bibi Khatoon Astarabadi and other Iranian writers wrote notable satires.