Full context:   Primary research into bushidō was later conducted by William Scott Wilson in his 1982 text Ideals of the Samurai: Writings of Japanese Warriors. The writings span hundreds of years, family lineage, geography, social class, and writing style—yet share a common set of values. Wilson's work also examined older Japanese writings unrelated to the warrior class: the Kojiki, Shoku Nihongi, the Kokin Wakashū, and the Konjaku Monogatari, as well as the Chinese Classics (the Analects, the Great Learning, the Doctrine of the Mean, and the Mencius). In May 2008, Thomas Cleary translated a collection of 22 writings on bushidō by warriors, scholars, political advisers, and educators, spanning 500 years from the 14th to the 19th centuries. Titled Training the Samurai Mind: A Bushido Sourcebook, it gave an insider's view of the samurai world: "the moral and psychological development of the warrior, the ethical standards they were meant to uphold, their training in both martial arts and strategy, and the enormous role that the traditions of Shintoism, Buddhism, Confucianism, and Taoism had in influencing samurai ideals".