 Sentence  It is traditionally defined as the (grammatical) complex expression capable of expressing a complete thought or proposition. This definition is questioned by the assumption that thoughts or propositions are expressed by utterances (or speakers). According to the contextualist thesis, no sentence expresses a complete (truth-evaluable) proposition; i.e., there are no ‘eternal’ sentences. From the viewpoint of pragmatics, sentences can be conceived as utterance-types, resulted from abstracting all elements except the linguistic expressions used. The issue of what counts as a complete (grammatical) sentence opposed to a sub-sentential complex expression pertains to syntax, rather than to semantics or pragmatics.