 Llull himself explicitly condemned many of the subjects, such as alchemy, that he is purported to have written about.The Roman Catholic inquisitor Nicholas Eymerich condemned 100 theories or ideas of Llull as errors in 1376.Pope Gregory XI also formally condemned 20 of his books in 1376 and the condemnation was renewed by Pope Paul IV, although Pope Martin V reversed the condemnation of Pope Gregory XI in 1416.