Natural Philosophy, the Mechanical Arts, Chemistry, Medicine, and Agriculture, belong to the first; but, to the last, belong Grammar, Logic, Rhetoric, Natural Theology, Morals, Jurisprudence, Law, Politics, and the Fine Arts. The knowledge of the human mind is the root from which these grow, and draw their nourishment. Whether, therefore, we consider the dignity of this subject, or its subserviency to science in general, and to the noblest branches of science in particular, it highly deserves to be cultivated.

A very elegant writer, on the Sublime and Beautiful, concludes his account of the passions thus: "The variety of the passions is great, and worthy, in every branch of that variety, of the most diligent investigation. The more accurately we search into the human mind, the stronger traces we every where find of His wisdom who made it. If a discourse on the use of the parts of the body may be considered as a hymn to the Creator; the use of the passions, which are the organs of the mind, cannot be barren of praise to him, nor unproductive to ourselves of that noble and uncommon union of science and admiration, which a contemplation of the works of Infinite Wisdom alone can afford to a rational mind; whilst referring to him whatever we find of right, or good, or fair, in ourselves, discovering his strength and wisdom even in our own weakness and imperfection, honouring them where we discover them clearly, and adoring their profundity where we are lost in our search, we may be inquisitive without impertinence, and elevated without pride: we may be admitted, if I may dare to say so, into the counsel of the Almighty, by a consideration of his works. This elevation of the mind ought to be the principal end of all our studies, which, if they do not in some measure effect, they are of very little service to us."

V. Of the proper means of knowing the operations of the mind

VI. Of the difficulty of attending to the operations of our own minds

VII. Division of the powers of the mind

VIII. Of social operations of mind

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ESSAY II. OF THE POWERS WE HAVE BY MEANS OF OUR EX-

iii

V

1

15

21

24

26

29

32

34

IV. False conclusions drawn from the impressions before mentioned

V. Of perception

47

53

VI. What it is to account for a phenomenon in nature

57

VII. Sentiments of philosophers about the perceptions of external

objects; and first, of the theory of Father Malebranche

59

VIII. Of the common theory of perception, and of the sentiments of the

Peripatetics, and of Des Cartes

64

XVII. Of the objects of perception; and, first, of primary and secondary

IV. Of identity

164

V. Mr. Locke's account of the origin of our ideas, and particularly of

the idea of duration

167

IV. Of general conceptions formed by combination

237

V. Observations concerning the names given to our general notions

VI. Opinion of philosophers about universals

245

248

VII. Opinions, ancient and modern, about first principles

VIII. Of prejudices, the causes of error

328

337

AN ESSAY ON QUANTITY

ANALYSIS OF ARISTOTLE'S LOGIC

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396

402

ESSAYS ON THE ACTIVE POWERS OF THE HUMAN MIND.

IV. Of Mr. Hume's opinion of the idea of power

451

V. Whether beings that have no will nor understanding may have

active power?

455

VI. Of the efficient causes of the phenomena of nature

459

VII. Of the extent of human power

462

ESSAY II. OF THE WILL.

СНАР.

I. Observations concerning the will

II. Of the influence of incitements and motives upon the will

III. Of operations of mind which may be called voluntary

IV. Corollaries

ESSAY III. OF THE PRINCIPLES OF ACTION.

PART I. OF THE MECHANICAL PRINCIPLES OF ACTION.

468

471

477

484

486

489

495

ESSAY IV. OF THE LIBERTY OF MORAL AGENTS.

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CHAP. I. The notions of moral liberty and necessity stated

567

II. Of the words, cause and effect, action, and active power

570

III. Causes of the ambiguity of those words

573

IV. Whether an action deserving moral approbation, must be done

with the belief of its being morally good

628