During the Ming dynasty, the Neo-Confucian doctrines of the Song scholar Zhu Xi were embraced by the court and the Chinese literati at large, although the direct line of his school was destroyed by the Yongle Emperor's extermination of the ten degrees of kinship of Fang Xiaoru in 1402. The Ming scholar most influential upon subsequent generations, however, was Wang Yangming (1472–1529), whose teachings were attacked in his own time for their similarity to Chan Buddhism. Building upon Zhu Xi's concept of the "extension of knowledge" ( or ), gaining understanding through careful and rational investigation of things and events, Wang argued that universal concepts would appear in the minds of anyone. Therefore, he claimed that anyone – no matter their pedigree or education – could become as wise as Confucius and Mencius had been and that their writings were not sources of truth but merely guides that might have flaws when carefully examined. A peasant with a great deal of experience and intelligence would then be wiser than an official who had memorized the Classics but not experienced the real world.