Although often grouped with the Edo Confucian scholar, Ogyū Sorai, as a proponent of the ancient learning movement, Jinsai's singlemost harsh critic was none other than Sorai. In a letter written to Jinsai, Sorai early on expressed admiration for the Kyoto philosopher and an interest in his philosophy, having read a pirated edition of Jinsai's "Gomō jigi" published long before Jinsai was ready for it to be released in its final form. Jinsai never responded to Sorai, apparently wounding his pride deeply. Whatever Sorai might have made of Jinsai's silence, it is clear that in Sorai's later writings, in the "Bendō" and "Benmei" (1728) in particular, Sorai takes issue with Jinsai on nearly every count, often criticizing him harshly as in effect no different in philosophical doctrine than the thinker he supposedly was criticizing, Zhu Xi.