1. Diverse conceptions of being and non-being: being as a term or concept; the meanings of is and is not
2. Being and the one and the many
2a. Infinite being and the plurality of finite beings
2b. The unity of a being
3. Being and good
3a. The hierarchy of being: grades of reality, degrees of intelligibility
3b. Being as the object of love and desire
4. Being and truth
4a. Being as the pervasive object of mind, and the formal object of the first philosophy, metaphysics, or dialectic
4b. Being as the measure of truth in judgments of the mind: clarity and distinctness as criteria of the reality of an idea
5. Being and becoming: the realty of change; the nature of mutable being
6. The cause of existence
7. The divisions or modes of being
7a. The distinction between essence and existence: existence as the act of being
7b. The distinction between substance and attribute, accident or modification: undependent and dependent being
(1) The conceptions of substance
(2) Corporeal and spintual substances, composite and simple substances: the kinds of substance in relation to matter and form
(3) Corruptible and incorruptible substances
(4) Extension and thought as dependent substances or as attributes of infinite substance
(5) Substance as subject to change and to different kinds of change: the role of accidents or modifications
(6) The nature and kinds of accidents or modifications
7c. The distinction between potentiality and actuality: possible and actual being
(1) The order of potentiality and actuality
(2) Types of potency and degrees of actuality
(3) Potentiality and actuality in relation to matter and form
7d. The distinction between real and ideal being, or between natural being and being in mind
(1) The being of the possible
(2) The being of ideas, universals, rights
(3) The being of mathematical objects
(4) The being of relations
(5) The being of fictions and negations
7e. The distinction between appearance and reality, between the sensible and suprasensible, between the phenomenal and noumenal orders
8. Being and knowledge
8a. Being and becoming in relation to sense: perception and imagination
8b. Being and becoming in relation to intellect: abstraction and intuition
8c. Essence or substance as the object of definition: real and nominal essences
8d. The role of essence in demonstration: the use of essence, property, and accident in inference
8e. The accidental in relation to science and definition
8f. Judgments and demonstrations of existence: their sources and validity