Introduction
Essay I. Of Active Power in General: 1. Of the notion of active power
2. The same subject
3. Of Mr Locke's account of our idea of power
4. Of Mr Hume's opinion of the idea of power
5. Whether beings that have no will nor understanding may have active power?
6. Of the efficient causes of the phaenomena of nature
7. Of the extent of human power
Essay II. Of the Will: 1. Observations concerning the will
2. Of the influence of incitements and motives upon the will
3. Of operations of mind which may be called voluntary
4. Corollaries
Essay III. Of the Principles of Action: Part I. Of the Mechanical Principles of Action: 1. Of the principles of action in general
2. Instinct
3. Of habit
Part II. Of Animal Principles of Action: 1. Of appetites
2. Of desires
3. Of benevolent affection in general
4. Of the particular benevolent affections
5. Of malevolent affection
6. Of passion
7. Of disposition
8. Of opinion
Part III. Of the Rational Principles of Action: 1. There are rational principles of action in man
2. Of regard to our good in the whole
3. The tendency of this principle
4. Defects of this principle
5. Of the notion of duty, rectitude, moral obligation
6. Of the sense of duty
7. Of moral approbation and disapprobation
8. Observations concerning conscience
Essay IV. Of the Liberty of Moral Agents: 1. The notions of moral liberty and necessity stated
2. Of the words cause and effects, action, and active power
3. Causes of the ambiguity of those words
4. Of the influence of motives
5. Liberty consistent with government
6. First argument for liberty
7. Second argument
8. Third argument
9. Of arguments for necessity
10. The same subject
11. Of the permission of evil
Essay V. Of Morals: 1. Of the first principles of morals
2. Of systems of morals
3. Of systems of natural jurisprudence
4. Whether an action deserving moral approbation, must be done with the belief of its being morally good
5. Whether justice be a natural or artificial virtue
6. Of the nature and obligation of a contract
7. That moral approbation implies a real judgment.
