The "Mencius" (also spelled "Mengzi" or "Meng-tzu"), a book of his conversations with kings of the time, is one of the Four Books that Zhu Xi grouped as the core of orthodox Neo-Confucian thought. In contrast to the sayings of Confucius, which are short and self-contained, the "Mencius" consists of long dialogues, including arguments, with extensive prose. It was generally neglected by the Jesuit missionaries who first translated the Confucian canon into Latin and other European languages, as they felt that the Neo-Confucian school largely consisted of Buddhist and Taoist contamination of Confucianism. Matteo Ricci also particularly disliked what they had believed to be condemnation of celibacy as unfilial, which is rather a mistranslation of a similar word referring more to aspects of personality. François Noël, who felt that Zhu's ideas represented a natural and native development of Confucius's thought, was the first to publish a full edition of the "Mencius" at Prague in 1711; as the Chinese rites controversy had been recently decided against the Jesuits, however, his edition attained little influence outside central and eastern Europe.