 Most propositions, however, are more complex than this classification suggests, for subjects and predicates need not be simple. In the proposition “God who is invisible created the world which is visible”, both the subject and predicate include subordinate clauses that appear to contain propositions (II.5–8). Because of the overall subject-predicate structure of all propositions, embedded propositions must be located in the subject or predicate. Because propositions can be complex, so can syllogisms. That becomes important in Part III when rules of inference are discussed, because all propositions, including conditionals and disjunctives, are forced into standard categorical forms. The treatment of verbal propositions, then, requires that subjects and predicates have unlimited complexity. There is, therefore, no basic inventory of simple linguistic parts permitting a recursive analysis, as in the modern classification of variables, function or predicate symbols, and logical symbols. On the classical view the proposition has a simple organic unity from the outside and a reiterable complexity from the inside. This again shows the importance of the authors’ commitment to the priority of thought over linguistic expressions of thought. Complexity is to be resolved in mental propositions by careful and attentive thinking instead of by perspicuous verbal notation.