  While al-Kindi is only rarely cited by authors writing in Arabic later than the tenth century, he was a significant figure for Latin medieval authors. Most influential were his works on astrology (see Burnett 1999); but works like On the Intellect were also translated, and as noted above there are works in the Kindian corpus that are extant only in Latin. One of these, On Rays, was the target of a polemic composed by Giles of Rome.