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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.

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.

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.

Priests and academics born into Catholicism tend to know all the inside stories, the flaws and foibles and legendary figures of the Church, and can regale one another with the rich lore of its characters and scandals. It is one big extended family. In that company, status is often contingent upon demonstrating that one has transcended the "Catholic ghetto." That explains, at least in large part, why dissent from official teaching carries the panache of being sophisticated. The disposition is: "Yes, I am a Catholic (or a priest, or a theologian), but I think for myself." The remarkably improbable assumption is that what one thinks up by oneself is more interesting than what the Church teaches.

Men, extending their inquiries beyond their capacities, and letting their thought wander into those depths where they can find no sure footing, it is no wonder that they raise questions and multiply disputes, which, never coming to any clear resolution, are proper only to continue and increase their doubts, and to confirm them at last in perfect skepticism. Whereas were the capacities of our understandings well considered, the extent of our knowledge once discovered, and the horizon found which sets the bounds between the enlightened and dark parts of things; between what is and what is not comprehensible by us, men would perhaps with less scruple acquiesce in the avowed ignorance of the one, and employ their thoughts and discourse with more advantage and satisfaction in the other.

How should scientists respond to the allegation that our "faith" in logic and scientific truth is just that — faith — not "privileged" over alternative truths? An obvious response is that science gets results. As I once wrote, "Show me a cultural relativist at 30,000 feet, and I'll show you a hypocrite... If you are flying to an international congress of anthropologists or literary critics, the reason you will probably get there — the reason you don't plummet into a ploughed field — is that a lot of Western scientifically trained engineers have got their sums right." Science supports its claim to truth by its spectacular ability to make matter and energy jump through hoops, and to predict what will happen and when.

Given my focus on practical rather than theoretical reasoning, I may at this point consider weakening the principle of total evidence and examining a presumption instead. The presumption to be examined establishes, for purposes of rational action, a generic bias in favor of more knowledge rather than on less. To defend the adoption of the presumption in favor of being maximally informed amounts to defending the belief that following it will lead, in the long run, to better overall results, in terms of goal fulfillment, than the results of following its antithesis (i.e., a presumption establishing a generic bias in favor of acting on the basis of less knowledge rather than on more), or indeed better than the results of a case-by-case balancing (i.e., of following no rule or presumption at all).

In religious belief as elsewhere, we must take our chances, recognizing that we could be wrong, dreadfully wrong. There are no guarantees; the religious life is a venture; foolish and debilitating error is a permanent possibility. (If we can be wrong, however, we can also be right.)

Christian belief is produced by a cognitive process (the "internal instigation of the Holy Spirit" [in Aquinas' words] or the "internal testimony of the Holy Spirit" [in Calvin's words] functioning properly in an appropriate epistemic environment according to a design plan successfully aimed at truth.

We all like to believe we are more rational than we really are. The painful truth is that we are naturally inclined to believe what we want to believe, and we may adopt some fashionable intellectual scheme because it allows us to feel superior to other people, especially those unenlightened masses who need the crutch or the discipline of religion. Of course people may also adopt a religious creed in order to justify themselves, especially in times or places where religion is fashionable. Everybody is subject to the temptation to rationalize. The temptation is probably greatest for those with the most intelligence because the more intelligent we are, the easier we will find it to invent convenient rationalizations for what we want to believe and to decorate them with high-sounding claptrap. Unless we take the greatest precautions, we will use our reasoning powers to convince ourselves to believe reassuring lies rather than the uncomfortable truths that reality may be trying to tell us.