Displayed on school walls during holidays, attached to floats and triumphal arches in processions, emblems played a part in all public events organized by the Jesuits in the 17th century. These verbal-iconographic compositions, which were used to illustrate the principal themes of the ceremony, were not a mere period detail or an ornamental device but constituted a means of expression which, by virtue of the particular relations governing the association of text and image, mobilized complex rhetorical, moral, and spiritual elements simultaneously. By associating an image - seen as the “body” - with a textual element (inscriptio et subscriptio) - the “soul” - the emblem-maker sought to achieve a unity of meaning in which the two forms of communication complemented each other: it is precisely the way in which the two elements are connected, and the laws that regulate their composition, that constitutes the foundation of the language of the emblem. This language, which is used in a corresponding manner in a variety of other symbolic compositions (devices, hieroglyphs, symbols, coats of arms, medals, etc.), is based on the rhetorical operations of the metaphor, applied here as a model both for the word, with its mimetic properties, and for figurative codes. However, the metaphor, as a product of human ingenuity, is not only situated at the crossroads of a system of thought crystallized in a great number of inventions, but also bears witness to an ornamental aesthetic, typical of the 17th century's aristocratic culture and social rituals. While there does exist a vast bibliography of materials on the function and role of metaphor in Baroque culture, questions nevertheless remain about the numerous cultural practices to which the Baroque gave rise and the particular processes that the 17th century brought into play. My intention here is not to resolve all such questions but rather to provide an analytical framework by focusing my observations on emblematic compositions produced in the scholastic milieu of the Society of Jesus.