 The view that the form of a consequence/argument pertains to its syncategorematic terms while its matter pertains to its categorematic terms is presupposed in both earlier and subsequent texts, but here with Buridan it receives a rare explicit formulation. A modern version of this idea still survives, in the form of the doctrine of the logical form of arguments and the modern preoccupation with logical constants (Read 1994; Dutilh Novaes 2012a; entry on logical constants of this encyclopedia). However, it is worth emphasizing once again that drawing the line between the form and the matter of an argument/consequence in this manner still does not entail the thesis that the form is that in virtue of which a valid argument is valid; nor does it entail the thesis that only the arguments/consequences satisfying the substitutional criterion are indeed valid. Buridan, in particular, does not hold either one of these theses.