Abstract

The so-called “Trinitarian paralogisms” are apparently legitimate instances of syllogistic inference-schemes with premises and conclusions containing expressions of the language of the Trinity doctrine, which fail to be truth- or acceptability-preserving. The logical problem of the Trinity splits into two levels of analysis. First, the technical aspects of Trinitarian paralogisms are analysed in terms of logical innovations in theories of “suppositio” and “distributio”. Second, the philosophical aspect of Trinitarian paralogisms translates into the question of formality as general applicability of logic. The sixteenth century tradition can be reconstructed as a reaction to the fourteenth century nominalist logical analysis. As opposed to post-medieval scholasticism developing the medieval approach, humanism and reformation criticise scholastic logic in terms of diff erent specifi c anthropological theories.