 The Later Mohist writings in which logic and language are provided the most extensive treatment are the entire four chapters of Book 10 and the first two chapters of Book 11 of the Mo Zi (chapters 40–5, collectively referred to as the Mohist Canons). The chapters of Book 10 are known by the titles Jing Shang (Canons I), Jing Xia (Canons II), Jing Shuo Shang (Expositions of the Canons I), and Jing Shuo Xia (Expositions of the Canons II). In Book 11, we have the Da Qu (Greater Selection) and the Xiao Qu (Lesser Selection). The text of the Canons leaves a great deal unsaid; there are missing segments and obvious textual errors, and interpretations of a number of critical passages have exhibited widespread disagreement. For convenience, this entry follows the widely recognized numbering system presented in Graham 2003 [1978], which pairs each Canon with its corresponding Exposition and identifies the passages from each pair by numbers prefixed with the letters A and B. (For instance, passage B40 of the Canons is from Canons II.) Graham’s work also reconstructs the Da Qu and the Xiao Qu into a single corpus entitled Names and Objects (NO) (Graham 2003 [1978]), although there is controversy in his reconstruction of the Da Qu as a single body of writing, given the fragmentary state of many of its key sections.