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CONTENTS
| Ch. | ||
| 17. | Substance is the cause or form which puts matter into a determinate state; it is that in a thing which is distinct from its material elements. | |
| Η. | ||
| 1. | The discussion of sensible substances continued. Their matter is itself substance. | |
| 2. | The main types of form or actuality. Definitions of matter, of form, and of the concrete individual distinguished. | |
| 3. | Form distinguished from the material elements; Antisthenes' attack on definition; definition analogous to number. | |
| 4. | Remote and proximate matter; the substratum of attributes not matter but the concrete individual. | |
| 5. | The relation of matter to its contrary states. | |
| 6. | What gives unity to a definition? The fact that the genus is simply the potency of the differentia, the differentia the actuality of the genus. | |
| Θ. | ||
| 1. | Being as potency and actuality. Potency in the strict sense, as potency of motion, active or passive. | |
| 2. | Non-rational potencies are single, rational potencies twofold. | |
| 3. | Potency defended against the attack of the Megaric school. | |
| 4. | Potency as possibility. | |
| 5. | How potency is acquired, and the conditions of its actualization. | |
| 6. | Actuality distinguished from potency; a special type of potency described; actuality distinguished from movement. | |
| 7. | When one thing may be called the potency or matter of another; how things are described by names derived from their matter or their accidents. | |
| 8. | Actuality prior to potency in definition, time, and substantiality; nothing eternal or necessary is a mere potency. | |
| 9. | Good actuality better than potency, and bad actuality worse; therefore no separate evil principle in the universe. Geometrical truths found by actualization of potencies. | |
| 10. | Being as truth, with regard to both simple and composite objects. | |
| Ι. | ||
| 1. | Four kinds of unit; the essence of a unit is to be a measure of quantity or of quality; various types of measure. | |
| 2. | Unity not a substance but a universal predicate; its denotation the same as that of being. | |
| 3. | Unity and plurality; identity; likeness; otherness; difference. | |
| 4. | Contrariety is complete difference; how related to privation and contradiction. | |
| 5. | The opposition of the equal to the great and the small. | |
| 6. | The opposition of the one to the many. | |
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