 However that may be, one is confronted in this work with a discussion which is by any measure rich, intricate, and comprehensive. Each of the four causes receives it own extended treatment in the sections of the Metaphysical Disputations dedicated to the causes of being (DM XII–XXVII). To come to see the character of these discussions, we may reflect especially on Suarez's presentation of two of the four causes in particular, one internal and one external. His treatments of formal and final causes are in any case of special note, since each in its own way represents a departure and development from the very Aristotelian tradition which forms the basic foundation for Suárez's metaphysics.