Arabic erotic literature has a long and rich history, which goes back as far as the ninth century. Far from being the pursuit of prurient pornographers, eroticism and sexuality received considerable attention from scholars. Written by Nasir al-Din al-Tusi (1201-1274), one of the leading scientists of the age, The Sultan's Sex Potions is part of a group of works devoted to aphrodisiacs as well as sexual stimulants, sexual practices, and positions. Sober...