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§. 1.

STA
NCE it is the understanding, that

An enquiry sets man above the rest of sensible into the un. beings, and gives him all the advantage derstanding, and dominion, which he has over them; it pleasant and

useful. is certainly a subject, even for its nobleness, worth our labour to enquire into. The understanding, like the eye, whilst it makes us see and perceive all other things, takes no notice of itself; and it requires art and pains to set it at a distance, and make it its own object. But, whatever be the difficulties that lie in the way of this enquiry; whatever it be, that keeps us so much in the dark to ourselves ; sure I am, that all the light we can let in upon our own minds, all the acquaintance we can make with our own understandings, will not only be very pleasant, but bring us great advantage, in directing our thoughts in the search of other things.

$. 2. This, therefore, being my purpose; Design. to enquire into the original, certainty, and extent of human knowledge; together with the grounds, and degrees of belief, opinion, and assent; I shall not at present meddle with the physical consideration of the mind; or trouble myself to examine, wherein its essence consists, or by what motions of our spirits, Vol I.

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or alterations of our bodies, we come to have any sensation by our organs, or any ideas in our understandings; and whether those ideas do in their formation, any, or all of them, depend on matter or no: These are speculations, which, however curious and entertaining, I shall decline, as lying out of my way in the design I am now upon. It shall suffice to my present purpose, to consider the discerning faculties of a man, as they are employed about the objects, which they have to do with : And I shall imagine I have not wholly misemployed myself in the thoughts I shall have on this occasion, if, in this historical, plain method, I can give any account of the ways, whereby our understandings come to attain those notions of things we have, and can set down any measures of the certainty of our knowledge, or the grounds of those persuasions, which are to be found amongst men, so various, different, and wholly contradictory; and yet asserted, somewhere or other, with such assurance and confidence, that he that shall take a view of the opinions of mankind, observe their opposition, and at the same time consider the fondness and devotion wherewith they are embraced, the resolution and eagerness wherewith they are maintained, may perhaps have reason to suspect, that either there is no such thing as truth at all; or that mankind hath no sufficient means to attain a certain knowledge of it. Method.

§. 3. It is, therefore, worth while to search

out the bounds between opinion and knowledge; and examine by what measures, in things, whereof we have no certain knowledge, we ought to regulate our assent, and moderate our persuasions. In order whereunto, I shall pursue this following method.

First, I shall enquire into the original of those ideas, notions, or whatever else you please to call them, which a man observes, and is conscious to himself he has in his mind; and the ways, whereby the understanding comes to be furnished with them.

Secondly, I shall endeavour to shew what knowledge the understanding hath by those ideas; and the certainty, Evidence, and extent of it.

Thirdly, Thirdly, I shall make some enquiry into the nature and grounds of faith, or opinion; whereby I mean that assent

, which we give to any proposition as true, of whose truth yet we have no certain knowledge: and here we shall have occasion to examine the reasons and degrees of assent.

§. 4. If, by this enquiry into the nature Useful to of the understanding, I can discover the know the ex

tent of our powers thereof; how far they reach; to

comprehenthat things they are in any degree propor- sion. tionate; and where they fail us : I suppose it may be of use to prevail with the busy mind of man, to be more cautious in meddling with things exceeding its compres hension; to stop when it is at the utmost extent of its tether; and to sit down in a quiet ignorance of those things, which, upon examination, are found to be beyond the reach of our capacities. We should not then perhaps be so forward, out of an affectation of an universal knowledge, to raise questions, and perplex ourselves and others with disputes about things, to which our understandings are not suited; and of which we cannot frame in our minds any clear or distinct perceptions, or whereof (as it has perhaps too often happened) we have not any notions at all. If we can find out how far the understanding can extend its view, how far it has faculties to attain certainty, and in what cases it can only judge and guess; we may learn to content ourselves with what is attainable by us in this state.

g. 5. For, though the comprehension of Vur capacity our understandings comes exceeding short of suited to our the vast extent of things ; yet we shall have state and cause enough to magnify the bountiful author of our being, for that proportion and degree of knowledge he lias bestowed on us, so far above all the rest of the inhabitants of this our mansion. Men have reason to be well satisfied with what God hath thought fit for them, since he hath given them (as St. Peter says) σάλα προς ζωής και ευσέβειαν, whatsoever is necessary for the conveniences of life, and information of virtue; and has put within the reach of their discovery the comfortable provision for this life, and the way that

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