 Suárez’s Disputationes do not follow the structure of Aristotle’s Metaphysics. Instead, he starts with an extensive introduction to the Aristotelian treatise, according to a slightly different order than in modern editions, and indicates the precise places where the topics discussed there can be found in his disputations. His first disputation reflects on the nature metaphysics as prima philosophia. It is followed by disputations on the concept of being (ens), its passions, different understandings of unity, on the true and the false, and the good and the bad. The pivotal role that these “transcendentals” of medieval metaphysics play in Suárez’s metaphysics was the basis for the interpretation of his theoretical philosophy as transcendental (Honnefelder 1990). Next come sixteen disputations dedicated to the four Aristotelian causes (material, formal, efficient, and final), followed by the various divisions of being (infinite and finite, uncreated and created—including some kind of rational theology which discusses questions such as whether God can be recognized with natural reason (Disp. XXIX), whether there are physical proofs for God’s existence (Disp. XXX) etc.—and the division of created being into substance and accidents). Then there are about twenty disputations dealing with the Aristotelian categories, concluding with one on the special theoretical problems associated with the concept of ens rationis, which does not belong to any of the previously discussed categories.