Eusebius tells us that it was the opening sentence of Protagoras' treatise on the Gods, and it is attested by numerous citations. It runs as follows: "About the gods, I am not able to know whether they exist or do not exist, nor what they are like in form; for the factors preventing knowledge are many: the obscurity of the subject, and the shortness of human life." The last words have sometimes been omitted, but they are important. They indicate the ground upon which Protagoras took up his position and the nature of his agnosticism. All that mattered to him was would could be known; and the Greek word (eidenai) that is used twice in this sentence means, precisely, knowledge: not belief, not faith.

Whether the argument appears in its softer or harder versions, behind it is a form of intellectual/political apartheid known as the private/public distinction: matters that pertain to the spirit and to salvation are the province of religion and are to be settled by religious reasons; matters that pertain to the good order and prosperity of civil society are the province of democratically elected representatives and are to be settled by secular reasons. As John Locke put it in 1689 (“A Letter Concerning Toleration”), the “care of men’s souls” is the responsibility of the church while to the civil magistrate belongs the care of “outward things such as money, land, houses, furniture and the like”; it is his responsibility to secure for everyone, of whatever denomination or belief, “the just possession of these things belonging to this life.” ¶  A neat division, to be sure, which has the effect (not, I think, intended by Locke) of honoring religion by kicking it upstairs and out of sight. If the business of everyday life — commerce, science, medicine, law, agriculture, education, foreign policy, etc. — can be assigned to secular institutions employing secular reasons to justify actions, what is left to religious institutions and religious reasons is a private area of contemplation and worship, an area that can be safely and properly ignored when there are “real” decisions to be made. Let those who remain captives of ancient superstitions and fairy tales have their churches, chapels, synagogues, mosques, rituals and liturgical mumbo-jumbo; just don’t confuse the (pseudo) knowledge they traffic in with the knowledge needed to solve the world’s problems.

Erroneous statements and opinions, in their naked deformity, are generally too hideous to win the regard and confidence of men even in their present depraved condition; while the manifestation of what is true, in its simple grandeur and pure light, is often too bright and fair to be agreeable to the eye and the heart of man. The great work which a lover of truth finds to do, is to separate the conglomerate mass of knowledge, or what men call knowledge, into its two component parts, the true and the false. What is false owes all its plausibility and power to its being associated and mingled with what is true. What is true, is rendered dim and uncertain and weak by being blended and confounded with the erroneous. The human mind is like a thrashing-floor. The honest inquirer will be constantly using the fan, to separate the chaff from the wheat.

The prima facie evidence for a God may not be enough to decide the question; but it should at least decide man to entertain the question. To think upon how slight a variation either in man or in external nature, the whole difference between physical enjoyment and the most acute and most appalling of physical agony may turn; to think how delicate the balance is, and yet how surely and steadfastly it is maintained, so as that the vast majority of creatures are not only upheld in comfort but often may be seen disporting themselves in the redundance of gaiety; to think of the pleasurable sensations wherewith every hour is enlivened, and how much the most frequent and familiar occasions of life are mixed up with happiness; to think of the food, and the recreation, and the study, and the society, and the business, each having an appropriate relish of its own, so as in fact to season with enjoyment the great bulk of our existence in the world; to think that, instead of living in the midst of grievous and incessant annoyance to all our faculties, we should have awoke upon a world that so harmonized with the various senses of man, and both gave forth such music to his ear, and to his eye such manifold loveliness; to think of all these palpable and most precious adaptations, and yet to care not, whether in this wide universe there exists a being who has had any hand in them; to riot and regale oneself to the uttermost in the midst of all this profusion, and yet to send not one wishful inquiry after that Benevolence which for aught we know may have laid it at our feet — this, however shaded from our view the object of the question may be, is, from its very commencement, a clear outrage against its ethical proprieties. If that veil of dim transparency, which hides the Deity from our immediate perceptions, were lifted up; and we should then spurn from us the manifested God — this were direct and glaring impiety. But anterior to the lifting of that veil, there may be impiety. It is impiety to be so immersed as we are, in the busy objects and gratifications of life; and yet to care not whether there be a great and a good spirit by whose kindness it is that life is upholden. It needs not that this great spirit should reveal Himself in characters that force our attention to Him, ere the guilt of our impiety has begun. But ours is the guilt of impiety, in not lifting our attention towards God, in not seeking after Him if haply we may find Him.

Humility is a virtue which concerns one's assessment of one's own merits and defects in comparison with others. The virtues, as Aristotle taught us, concern particular passions; they assist reason to control these passions. The relevant passion in this quarter is the raging tempest of self-love: our inclination to overvalue our own gifts, overesteem our own opinions and place excessive importance on getting our own way. Humility is the virtue that counteracts this prejudice. It does so not by making the judgment that one's own gifts are lesser than others, or that one's own opinions are falser than others — for that, as St Thomas says, would often lead to falsehood. It does so, rather, by making the presumption that others' talents are greater, others' opinions more likely to be right. Like all presumptions, the presumption of humility is rebuttable; it may be that for a particular purpose one's own gifts are more adapted than those of one's neighbours; on a particular topic it may be that one is right and one's neighbour wrong. But only by approaching each conflict of interest and opinion with this presumption can one hope to escape the myopia that magnifies everything to do with oneself by comparison with everything to do with others.

In the beginning was the Word, and the Word was with God, and the Word was God." "All things were made by Him." "The Word was made flesh." Now what is a word or λδγος? As understood by St. John and the men of his time, it is thought embodied in language. It is that which is in us set forth in that medium of articulates sounds which God has given to us, in order that we may make our very selves known to our fellows. The most true and fitting words give us the most exact conception of the heart and soul of him whose words they are; and so the Personal and Eternal Word is the setting forth, so to speak, of the hidden intellect, love, and goodness of God, so that His creatures may be able to apprehend Him, Whom neither man nor angel hath seen or can see. So that the Word, being perfect, is the perfect utterance, or showing forth, or manifestation of all that is in God.

Christianity, Islam, and Judaism all claim that God has given humans a revelation. Divine revelation may be either of God, or by God of propositional truth. Traditionally Christianity has claimed that the Christian revelation has involved both of these. God revealed himself in his acts in history; for example in the miracles by which he preserved the people of ancient Israel, and above all by becoming incarnate (that is human) as Jesus Christ, who was crucified and rose from the dead. And God also revealed to us propositional truths by the teaching of Jesus and his church. Some modern theologians have denied that Christianity involves any propositional revelation, but there can be little doubt that from the second century (and in my view from the first century) until the eighteenth century, Christians and non-Christians were virtually unanimous in supposing that it claimed to have such a revelation, and so it is worthwhile investigating its traditional claim. It is in any case very hard to see how it would be of great use to us for God to reveal himself in history (e.g. in the Exodus, or in the life, death, and resurrection of Jesus) unless we could understand the cosmic significance of what happened — e.g. that Jesus was God incarnate and that his life and death constituted an atonement for our sins. And how are we to know that unless with the history God provides its interpretation?

I don't use the word "atheist" about myself, because I think it mirrors the certitude I'm so opposed to in religion. What I say in the film is that I don't know. I don't know what happens when you die, and all the religious people who claim they do know are being ridiculous. I know that they don't know any more than I do. They do not have special powers that I don't possess. When they speak about the afterlife with such certainty and so many specifics, it just makes me laugh. People can tell you, "Oh yes, when you get to Paradise there are 72 virgins, not 70, not 75." Or they say, "Jesus will be there sitting at the right hand of the Father, wearing a white robe with red piping. There will be three angels playing trumpets." Well, how do you know this? It's just so preposterous. So, yes, I would like to say to the atheists and agnostics, the people who I call rationalists, let's stop ceding the moral high ground to the people who believe in the talking snake. Let's have our voices heard and be in the debate.

The disturbing God acknowledged by Jewish and Christian theism is not static but dynamic, interactive, and elusive. In particular, this God reveals himself to some people at times and hides himself from some people at times, for the sake of gaining fellowship with people. As a result, this God is cognitively elusive, since the claim that this God exists is not obviously true or even beyond evidentially grounded doubt for all capable mature inquirers. Let’s think of the God in question as “the living God” in virtue of this God’s being personally interactive with some agents and cognitively nimble and dynamic rather than functionally or cognitively static. This God, more specifically, is elusive for good reasons, that is, for reasonable divine purposes that fit with God’s unique character of being worthy of worship and thus being morally perfect. Accordingly, we should expect any evidence of God’s existence for humans to be purposively available to humans, that is, available to humans in a way that conforms to God’s perfectly good purposes for humans. This paper explores the striking consequences of this position for natural theology in particular and for theistic philosophy in general. It outlines an epistemology of God’s existence that is pneumatic, owing to a personal divine Spirit (who cannot be reduced to Calvin’s sensus divinitatis), and that is thus foreign to secular epistemology and to much philosophy of religion. It is also an incarnational epistemology, given its cognitive role for God’s Spirit dwelling in humans, in such a way that they become a temple of God’s Spirit (1 Cor. 6:19). We may think of incarnational epistemology as requiring that human inquirers themselves become evidence of God’s reality in virtue of becoming God’s temple. In this approach, characteristic evidence of God’s reality is increasingly available to me as I myself am increasingly willing to become such evidence.

When I said that Jesus is good for the world because he is the life of the world, you just tossed this away. You said, "You cannot possibly 'know' this. Nor can you present any evidence for it." Actually, I believe I can present evidence for what I know. But evidence comes to us like food, and that is why we say grace over it. And we are supposed to eat it, not push it around on the plate – and if we don't give thanks, it never tastes right. But here is some evidence for you, in no particular order. The engineering that went into ankles. The taste of beer. That Jesus rose from the dead on the third day, just like he said. A woman's neck. Bees fooling around in the flower bed. The ability of acorns to manufacture enormous oaks out of stuff they find in the air and dirt. Forgiveness of sin. Storms out of the North, the kind with lightning. Joyous laughter (diaphragm spasms to the atheistic materialist). The ocean at night with a full moon. Delta blues. The peacock that lives in my yard. Sunrise, in color. Baptizing babies. The pleasure of sneezing. Eye contact. Having your feet removed from the miry clay, and established forever on the rock. You may say none of this tastes right to you. But suppose you were to bow your head and say grace over all of it. Try it that way.