The ArgumentThis paper contains two main sections. In the first I suggest a mechanism of interpretation, based on a distinction between two aspects of meaning, analyzed using two kinds of rhetorical-poetical constructions:tropesto explore the linguistic relations—metaphors, metonyms, synecdoches, etc.—that endow terms with content, andtopicsto account for the structuring function of key expressions, which enables the recognition and adjudication of phrases, arguments, texts, genres, etc. In the second section I substantiate my claims by demonstrating how new light is shed on Galileo (...) Galilei's neglected and obscureDe Motuif these two aspects of the meaning of its central theoretical terms are taken into consideration; interpreted through this approach it is revealed as a text revolutionary in its ideas, while the communicative efficacy of its continuous use of the traditional terminology is unveiled. (shrink)