Objects and Attitudes develops a radically novel semantics of attitude reports, modal sentences, and quotation based on an ontology of attitudinal, modal, and phatic objects, entities such as claims, thoughts, intentions, desires, requests, utterances, as well as needs, obligations, permissions, offers, and abilities. It systematically pursues a methodology of descriptive metaphysics--specifically, natural language ontology--and argues that natural language reflects an ontology of attitudinal and modal objects rather than an ontology of abstract propositions. The book gives a new development of truthmaker semantics ("object-based truthmaker semantics"), for which attitudinal and modal objects provide specific support. The semantics of attitude reports, modal sentences and quotation pursues the emerging view that clausal complements do not generally act as proposition-referring terms but rather as predicates of the (content-bearing) object described by the embedding predicate. It also d