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I take knowledge in the dispositional sense to be identical with the capacity to represent a respective subject matter as it is, on an appropriate basis of thought and/or experience. In the occurrent sense it consists in actually representing, at a point in time, the respective subject matter as it is, on an appropriate basis of thought and/or experience. This is not intended as an analysis or definition of knowledge, but as an initial description of cases which count as knowledge or knowing.

The absence of any reference to belief in my statements on knowledge and knowing will be immediately noticed. The absence is intended, and though rare today in discussions of knowledge it is by no means unique in the history of the theory of knowledge. ... Belief I understand to be some degree of readiness to act as if such and such (the content believed) were the case. Everyone concedes that one can believe where one does not know. But it is now widely assumed that you cannot know what you do not believe. Hence the well-known analysis of knowledge as "justified, true belief." But this seems to me, as it has to numerous others, to be a mistake. Belief is, as Hume correctly held, a passion. It is something that happens to us. Thought, observation and testing, even knowledge itself, an be sources of belief, and indeed should be. But one may actually know (dispositionally, occurrently) without believing what one knows.

One could retreat to a mere methodological naturalism and say that scientific method is our only hope as human beings. Whether or not we can adequately specify naturalism or know it to be true, one might say, the "scientific method" must be exclusively followed for human well-being. Naturalism would then be a humane proposal, not a philosophical claim. The proposal would be to assume in our inquiries that only the physical (or the empirical) exists and to see if inquiry based upon that assumption is not more successful in promoting human ends than any other type of inquiry.

As every enquiry, which regards religion, is of the utmost importance, there are two questions in particular, which challenge our attention, to wit, that concerning its foundation in reason, and that concerning its origin in human nature. Happily, the first question, which is the most important, admits of the most obvious, at least, the clearest, solution. The whole frame of nature bespeaks an intelligent author; and no rational enquirer can, after serious reflection, suspend his belief a moment with regard to the primary principles of genuine Theism and Religion. But the other question, concerning the origin of religion in human nature, is exposed to some more difficulty. The belief of invisible, intelligent power has been very generally diffused over the human race, in all places and in all ages; but it has neither perhaps been so universal as to admit of no exception, nor has it been, in any degree, uniform in the ideas, which it has suggested. Some nations have been discovered, who entertained no sentiments of Religion, if travellers and historians may be credited; and no two nations, and scarce any two men, have ever agreed precisely in the same sentiments.

Nothing is more usual and more natural for those who pretend to discover any thing new to the world in philosophy and the sciences, than to insinuate the praises of their own systems by decrying all those which have been advanced before them. And indeed were they content with lamenting that ignorance, which we still lie under in the most important questions that can come before the tribunal of human reason, there are few who have an acquaintance with the sciences that would not readily agree with them. 'Tis easy for one of judgment and learning to perceive the weak foundation even of those systems which have obtained the greatest credit, and have carried their pretensions highest to accurate and profound reasoning. Principles taken upon trust, consequences lamely deduced from them, want of coherence in the parts, and of evidence in the whole, these are every where to be met with in the systems of the most eminent philosophers, and seem to have drawn disgrace upon philosophy itself.

Nature has pointed out a mixed kind of life as most suitable to the human race, and secretly admonished them to allow none of these biases to draw too much, so as to incapacitate them for other occupations and entertainments. Indulge your passion for science, says she, but let your science be human, and such as may have a direct reference to action and society. Abstruse thought and profound researches I prohibit, and will severely punish, by the pensive melancholy which they introduce, by the endless uncertainty in which they involve you, and by the cold reception which your pretended discoveries shall meet with, when communicated. Be a philosopher; but, amidst all your philosophy, be still a man.

To oppose the torrent of scholastic religion by such feeble maxims as these, that it is impossible for the same thing to be and not to be, that the whole is greater than a part, that two and three make five; is pretending to stop the ocean with a bullrush. Will you set up profane reason against sacred mystery? No punishment is great enough for your impiety. And the same fires, which were kindled for heretics, will serve also for the destruction of philosophers. ... The whole is a riddle, an aenigma, an inexplicable mystery. Doubt, uncertainty, suspence of judgment appear the only result of our most accurate scrutiny, concerning this subject. But such is the frailty of human reason, and such the irresistible contagion of opinion, that even this deliberate doubt could scarcely be upheld; did we not enlarge our view, and opposing one species of superstition to another, set them a quarrelling; while we ourselves, during their fury and contention, happily make our escape, into the calm, though obscure, regions of philosophy.

No quality of human nature is more remarkable, both in itself and in its consequences, than that propensity we have to sympathize with others, and to receive by communication their inclinations and sentiments, however different from, or even contrary to our own. This is not only conspicuous in children, who implicitly embrace every opinion propos’d to them; but also in men of the greatest judgment and understanding, who find it very difficult to follow their own reason or inclination, in opposition to that of their friends and daily companions. To this principle we ought to ascribe the great uniformity we may observe in the humours and turn of thinking of those of the same nation; and ’tis much more probable, that this resemblance arises from sympathy, than from any influence of the soil and climate, which, tho’ they continue invariably the same, are not able to preserve the character of a nation the same for a century together. A good-natur’d man finds himself in an instant of the same humour with his company; and even the proudest and most surly take a tincture from their countrymen and acquaintance. A chearful countenance infuses a sensible complacency and serenity into my mind; as an angry or sorrowful one throws a sudden dump upon me. Hatred, resentment, esteem, love, courage, mirth and melancholy; all these passions I feel more from communication than from my own natural temper and disposition. So remarkable a phaenomenon merits our attention, and must be trac’d up to its first principles.

[U]pon the whole, we may conclude that the Christian Religion not only was at first attended with miracles, but even at this day cannot be believed by any reasonable person without one.... Whoever is moved by Faith to assent to it, is conscious of a continued miracle in his own person, which subverts all the principles of his understanding, and gives him a determination to believe what is most contrary to custom and experience.

There are things we know that we know. There are known unknowns - that is to say, there are things that we now know we don't know, but there are also unknown unknowns. There are things we do not know we don't know.