particulars a different turn to the speculations of philosophers, and pointing out to them more distinctly those subjects, where alone they can expect assurance and conviction.  Human Nature is the only science of man; and yet has been hitherto the most neglected.  It will be sufficient for me, if I can bring it a little more into fashion; and the hope of this serves to compose my temper from that spleen, and invigorate it from that indolence, which sometimes prevail upon me.  If the reader finds himself in the same easy disposition, let him follow me in my future speculations.  If not, let him follow his inclination, and wait the returns of application and good humour.  The conduct of a man, who studies philosophy in this careless manner, is more truly sceptical than that of one, who feeling in himself an inclination to it, is yet so overwhelmed with doubts and scruples, as totally to reject it.  A true sceptic will be diffident of his philosophical doubts, as well as of his philosophical conviction; and will never refuse any innocent satisfaction, which offers itself, upon account of either of them.

Nor is it only proper we should in general indulge our inclination in the most elaborate philosophical researches, notwithstanding our sceptical principles, but also that we should yield to that propensity, which inclines us to be positive and certain in particular points, according to the light, in which we survey them in any particular instant.  It is easier to forbear all examination and enquiry, than to check ourselves in so natural a propensity, and guard against that assurance, which always arises from an exact and full survey of an object.  On such an occasion we are apt not only to forget our scepticism, but even our modesty too; and make use of such terms as these, it is evident, it is certain, it is undeniable; which a due deference to the public ought, perhaps, to prevent.  I may have fallen into this fault after the example of others; but I here enter a caveat against any Objections, which may be offered on that head; and declare that such expressions were extorted from me by the present view of the object, and imply no dogmatical spirit, nor conceited idea of my own judgment, which are sentiments that I am sensible can become no body, and a sceptic still less than any other.

BOOK II OF THE PASSIONS

PART I OF PRIDE AND HUMILITY

SECT.  I DIVISION OF THE SUBJECT

As all the perceptions of the mind may be divided into impressions and ideas, so the impressions admit of another division into original and secondary.  This division of the impressions is the same with that which I formerly made use of [Book I. Part I. Sect. 2.] when I distinguished them into impressions of sensation and reflection.  Original impressions or impressions of sensation are such as without any antecedent perception arise in the soul, from the