Moses Maimonides’ On Coitus was composed at the request of an unknown high-ranking official who asked for a regimen that would be easy to adhere to, and that would increase his sexual potency. The present edition by Gerrit Bos contains the original Arabic text, three medieval Hebrew translations, two Latin versions from the same translation (edited by Charles Burnett), and a Slavonic translation (edited by Will Ryan and Moshe Taube).