Suppose you granted everything last week established. Last week ended by showing that we apply our standard of evidence unevenly: we never ask for proof that our mother has a conscious mind behind her eyes, yet we ask God for exactly that, and most of us had never noticed the difference. Grant it. Even so, a reply forms, and it forms quickly, because it is the strongest thing to be said on this side. It runs like this. There is still a difference between the person who follows the evidence and the person who believes whatever they would like to be true. Following the evidence is not a quirk, not one position that could be exchanged for another. It is simply what it is to think clearly. You may call it "a standard," as though it were one dish on a menu — but it is not one option among others. It is what reason requires. Take it away and you are not relying on some alternative standard; you are believing what is comfortable and calling it courage.
That reply deserves to be taken seriously, and it is exactly the objection set aside at the end of last week with a promise to return to it tonight. It is the strongest position available to the unbeliever, and not a cheap one. A person can concede that they are not a neutral judge — can admit to being a party to the dispute, with the rules of evidence in their own hand — and still maintain, in good faith: yes, but the rule I hold is the right one. It is the rule reason itself would write. I am not above the argument; I am simply on the side the argument was always going to reach.
This is Philosophy for Us — philosophy for everyone, no degree required.
This is Is There Anyone There?, episode five of eight. Last week the standard turned back on the person holding it. For three weeks we had been assessing arguments about God; then we turned to the rules we were assessing them by — what counts as evidence, and how much is enough — and found two things that are not easy to sit with. First, that we had never actually written those rules down. Second, that they were in our own hand: we were not assessing the God question by a neutral, external standard; we were assessing it by one we had ourselves adopted, without ever noticing we had done so. And one question was set aside — the last one — with a promise to reach it tonight: the claim that wanting evidence is not a position at all, but simply what being reasonable means. Tonight we examine it, and ask whether it is what it claims to be — the plain requirement of reason — or one more position, with an author, a date, and a name.
Before we examine this last position, it deserves a fair hearing — and the version of it most people carry is weaker than the real one.
The instinct — follow the evidence, believe in proportion to the proof, and never further — has a name, a date, and an advocate who stated it more boldly than most of us would dare. The name can wait a moment; take the man first. In 1877 the English mathematician and philosopher William Kingdon Clifford published a short, fierce essay called "The Ethics of Belief." He begins not with an argument but with a case, and the case carries the point better than an argument would.
A shipowner is preparing to send an emigrant ship to sea. He knows the ship is old, poorly built to begin with, and much repaired since. Doubts occur to him about whether she is truly fit for the voyage — whether he ought to have her overhauled, at real cost and delay, before he fills her with families and sends her off. But he talks himself out of the doubt. He dwells on how many voyages she has already survived, how the pessimists were wrong every time before; he tells himself that Providence would hardly let harm come to so many hopeful emigrants; and he brings himself, sincerely, to an easy confidence. He watches her leave the harbour without misgiving, and when she sinks in mid-ocean with all aboard, he collects his insurance and tells no one.
Clifford's verdict is that this man is guilty of the deaths of those people. Then he adds the part that turns a sad story into philosophy: the shipowner would have been just as guilty had the ship held. Had she carried every passenger safely across, he would have been exactly as much in the wrong — because the rightness of his belief was never a matter of how the voyage turned out. It is a matter of whether he had any right to that belief on the evidence before him. He did not. He had bought his own comfort by suppressing his doubts instead of resolving them. That is the fault: not being proven wrong, but believing without warrant and acting on it.
Then Clifford states the principle at its full reach, and this is the sentence to hold onto, because it is the one already at work in the back of the mind: "It is wrong always, everywhere, and for anyone, to believe anything upon insufficient evidence." Always, everywhere, anyone — not only shipowners with lives in their care, but everyone, on everything. His reason is a strong one and worth stating. No belief, he argues, is truly private. What a person allows themselves to believe shapes what they do, and what they do affects others; and beliefs are passed on — to one's children, one's friends, the stranger who takes one's word. So to hold a belief one has not earned is not a private indulgence. It weakens the common store of reason — the shared habit of testing claims and asking for their grounds — that everyone afterward has to rely on. Believe carelessly, and you do not only mislead yourself; you damage something held in common.
Is this crude? Is it the shallow "show me the proof" that the demand for evidence is so often caricatured as? It is not. It is one of the most morally serious things anyone has said about belief. It holds that how one believes is not purely one's own business, because one is not purely one's own; that credulity is a kind of theft from people one will never meet. If some part of you wants to say, I simply follow the evidence, and that is ordinary honesty — then Clifford is the most serious advocate that sentence has, and he is not poor company.
So the demand will not be waved off, and it should not be — not as it might have been last week, when it was only a vague feeling. Hold it at full strength. The demand for evidence, at its most honest, is not a sneer at the faithful. It is a conscience.
But here is the one new thing, and the whole of tonight depends on it. It has a name. What had been carried as the plain background of all clear thinking — "of course you follow the evidence" — turns out to be a specific, dated, signed position, with an author, a year, and a famous essay. It is called evidentialism. And consider what a name does. The unquestioned background of thought carries no name. Gravity had no champion who rose in 1877 to argue for it; the assumptions everyone simply shares have no author. Only a position — one option where others were possible — acquires a name, a date, and someone prepared to defend it. So the moment the thing can be called "evidentialism," half of what seemed certain about it is already gone: that it was the background at all, rather than a position one had adopted and stopped noticing one was holding.
So the position has a name. But naming a position does not defeat it, and the honest reply comes straight back: very well — call it "evidentialism," attach a Victorian and a date. It is still correct. A true claim is no less true for having a name. So what if Clifford signed it? He signed something that holds.
Good. That is the real dispute, and now it can be had properly — the way every dispute in this series has been had, by making the claim stand up and say exactly what it is. So: what is the rule? Not its mood — the rule itself. Stated plainly, it runs roughly like this. You are not entitled to believe something unless you can support it with evidence — unless you can give an argument for it from other things you already know. That is what underlies "show me the proof." No belief comes free; every belief must show its working and trace back to something more secure beneath it.
Here is the philosopher for this stretch, and he is as serious as Clifford — no one's idea of a lightweight: the American philosopher Alvin Plantinga, who has worked on precisely this question for decades, from his 1983 essay "Reason and Belief in God" to his 2000 book Warranted Christian Belief. Plantinga asks the question that is almost never asked: that rule you have just stated — support every belief with an argument from evidence — where does it come from? It is not a plain fact one simply finds in the world. It is the visible top of a whole underlying theory about what makes a belief rational to hold, and that theory has a name of its own: classical foundationalism. It holds, near enough, that any belief is rational only if it is one of two kinds. Either it is the kind one sees to be true the moment one understands it — two and two are four; nothing is both round and square — or it is the kind the senses deliver directly — there is a light on in here; something is making a sound. Those are the foundations. Every other belief is rational only if it can be built, by argument, up from that foundation. Anything that cannot be traced back down to it — not self-evident, not given by the senses, not proved from things that are — one has no business believing.
That is the theory of which "show me the evidence" is the top. For several centuries a great many serious people built their lives on it. It is not a foolish theory. But Plantinga does one simple thing that turns the whole matter over: he takes the rule of that theory and applies it to itself.
Here is the rule once more: believe only what is self-evident, or evident to the senses, or provable by argument from things that are. Now turn it on itself. Is that rule self-evident — is "believe only the self-evident or the provable" something one sees to be true the way one sees that two and two make four? It is not; serious people have looked straight at it and denied it. Is it evident to the senses — can it be seen, heard, or weighed? Plainly not; it is not the sort of thing the senses deliver. Then can it be proved, by argument, from things that are self-evident or given by the senses? No one has ever done so. There is no such proof. It is a rule that was handed down and lived by, not a rule anyone derived.
Consider what that does, because it is not a debating trick but a genuine failure. The rule says: anything that cannot be grounded in the self-evident, the sensory, or proof from those, one may not rationally believe. And the rule itself can be grounded in none of those. So by its own verdict, the rule is one of the very things one is not entitled to believe. It fails the test it sets for everything else. It is a standard that, applied to itself, forbids its own acceptance.
The edge of this was there last week, and I deliberately passed over it: the point that a measuring standard cannot measure itself, with a promise to return. Here it is, at full weight. It is not a footnote. What one was ready to call "just being reasonable," the one secure support left under every other belief, turns out to be a particular theory that cannot meet the standard it imposes on everything else. Whatever it is, it is not the foundation. A foundation does not fail its own inspection.
And the rule is in worse trouble still, because there is a second problem with it — one already met last week, though without its name.
Last week the standard was run on the things one actually lives by: that one's mother has an inner life; that the world is more than five minutes old; that the floor will hold on standing up. Each failed the test — none self-evident, none provable — and each was held anyway, rationally, every waking hour. That was used last week to show that one does not in fact apply the rule everywhere. But there is a deeper point folded inside it, and it can now be stated directly. It is not only that one declines to apply the rule to those beliefs. It is that the rule, applied to them, returns the plainly wrong answer. It says you are irrational to believe that your mother has a conscious mind behind her eyes. And you are not. The rule is not catching a real error there; it is simply mistaken about the case. And any theory of rational belief that hands back the verdict "it is irrational to think other people have minds" is not one you respond to by giving up on other people having minds. You conclude that the theory is too small, and that you were right about the minds all along.
Plantinga has a term for beliefs of this kind — one's mother's mind, the past, the external world. He calls them properly basic: fully rational to hold, but not because they were argued up from something deeper. One does not reason one's way to other minds. One finds oneself believing it, in the ordinary course of living among other people, and that believing is in perfectly good order as it stands, with no argument beneath it and none required. It is not a leap past reason. It is reason working in a way that does not run through proof.
And here is what all of it has been leading to. I will state it once, plainly, and then spend the rest of the episode guarding it against being taken the wrong way. If a belief can be properly basic — rational with no argument beneath it — then belief in God might be a belief of that kind. Not is. Might be. It might be the sort of thing a person can hold rationally without first proving it, as you hold that the past is real. And if it even might be, then walking up to it and demanding "where is your argument?" settles nothing — because the demand simply assumes that God-belief is the other kind, the kind that owes an argument before it may stand. It assumes the very point in question. There is an old name for that, the oldest fault in reasoning: begging the question — helping oneself, in the way one frames the matter, to the answer one was supposed to establish. "Prove it or drop it," aimed at God, quietly takes for granted that God-belief is a conclusion awaiting premises. Whether it is that, or whether it is more like trust, more like recognising a person, more like one's conviction that other minds are real — that is the entire dispute. It cannot be stepped over by sounding rigorous.
Now stop, because this is the part the whole episode was built to protect, and it will be said as plainly as possible, and said twice. None of that has proved there is anyone there. Read the last few minutes back, and not one sentence says that God exists, or that belief in God really is properly basic, or that the believer has won. What has been shown is narrower and stranger than a win. It is that the rule with which the whole question was to be settled — "no belief without an argument from evidence" — is one theory of rational belief among others; that it cannot pass its own test; and that it cannot be aimed at God without begging the question. That is not a victory for God. It is the removal of a false claim to neutrality — a standard that presented itself as no standard at all, as the view from above the dispute, when it was in fact one position within it. The two cases stand exactly where they stood.
Because Clifford's objection still stands. His conscience about credulity is real, and it may genuinely be that God-belief is exactly the kind of claim that should have to produce an argument — that it is not like your mother's mind, that the believer does owe a proof and cannot escape it. That option is fully open. But it would have to be taken deliberately — one would have to say why God is the kind of belief that needs grounding when belief in other minds does not — rather than assumed under cover of sounding reasonable. Earn the demand, and it is yours to make. And Plantinga's point stands too: "might be properly basic" is a long way from "is," and he can be resisted the whole distance. One can deny that there is any faculty in us that delivers God the way the eyes deliver light; one can hold that the cases are simply not alike, that other minds are forced on us by daily life in a way God is not. Both remain in force, then — the demand for a proof and its challenger — and neither has been refuted here. The only thing removed is the position you imagined occupying above the two of them: the neutral one, the position of reason standing above the dispute and settling it from outside. That position was never available. You held a standard of your own the whole time, while taking yourself to have none.
So consider where that leaves you, because it is a different place from an answer, and its size is worth stating exactly. You came into these five weeks to settle a question about God — and you have watched the question itself change. It was never, first, a question about God at all. It was first a question about the standard by which you were going to judge God. And that standard has turned out to be your own: chosen, or rather inherited and never noticed as a choice, with a name on it, an advocate behind it, and a flaw in its own structure. So beneath "is there enough evidence?" lies a question you stepped over entirely, and it is the one that has to be answered first. Not: is the evidence sufficient. But: sufficient by whose measure — set by whom — and can I stand behind choosing that measure, openly, with my eyes on it? That is the question now. It is harder than the one you carried in. And it is yours — I cannot answer it for you, and, honestly, I would not know how to answer it for myself without sitting down to the same work I have just done here.
Before we finish, here is the thing to take away and use. Watching it done to you is not the same as having it; it becomes yours only once you have done it yourself, cold, on ground that has nothing to do with God. So here is the exercise for this week, and, like last week's, it is deliberately not about God. Last week the task was to catch a standard you had never stated. This week it is one degree harder: catch a demand for proof that has already decided, without saying so, what kind of thing it is even asking about.
Here is the case. Nearly everyone knows a version of this person — it may be you — who says, of other people: I don't trust anyone until they have earned it. Show me the record. Trust is something you prove to me first, and until you have proved it, you don't have it. It sounds like plain good sense: hard to fool, not easily taken in. And across much of life it is exactly right. But apply tonight's work to it. That demand — prove you are trustworthy, and then I will trust you — has quietly settled something it never argued for: that trust is always a conclusion, reached after the evidence is in, the way a verdict comes after a trial. Sometimes it is. But notice what the demand cannot see. Some of the deepest trust in a life cannot be earned before it is given, because the evidence only comes into being after someone has gone first — the friend who became reliable because someone relied on them before they had earned it; the support you discovered you could lean on only by leaning. The person who demands the full record in advance will never receive that evidence, because the demand itself rules out the only conditions under which it could ever appear. That demand is not reading the world neutrally. It has assumed, in the way it is framed, that trust is one kind of thing — a verdict — when whether trust is that, or something one sometimes has to extend before it can be shown, is the actual open question. That is the fault: the question begged inside a reasonable-sounding request. Watch for it this week, in someone who is not you — and stay generous while you watch, because they may well be right about the person they are doubting; that is not the point. The point is to catch the thing itself: a demand for proof that has already, silently, decided what the thing it wants proof of even is. When you can spot that, it is yours.
Two last things, because both are likely rising by now, and I owe you honesty about which one tonight addresses and which it does not.
The first. If your standard for belief is a position you chose — or inherited and never examined — then a hard question sits in plain view: are you answerable for it? If "believe only on the evidence" is not the neutral background but a choice, then is choosing it, well or badly, a kind of duty — is there blame to be had in believing wrongly, as Clifford stood over that shipowner and called him guilty? Are you responsible for the standard you hold? Hold that question, because it is a real one and it is coming — but note that it is not being opened tonight. It has its own episode later in the series, at full weight: whether one is responsible for what one believes, whether believing badly is a way of doing wrong. Tonight did one thing only. It showed that the standard is a standpoint. Whether you are answerable for which standpoint you hold is a separate and very large question, and it will not be crammed into the last five minutes of this one. The flag is planted; we return to it.
The second. This whole episode has spoken of "belief" as though its meaning were plain — believing as what a juror does, the verdict handed down once the evidence is weighed. That picture has been allowed to stand, because it is the one you came in holding. But here is a question to carry away, and I mean it strictly as a question, not an answer: where did that picture come from? The idea that to believe something is to have judged it probably true on the evidence — as one believes tomorrow's forecast — is that simply what the word "believe" has always meant, its plain and timeless sense? Or is "belief as a verdict on the evidence" one particular picture of believing, a picture with a history, inherited and never dated? I am only asking. I will not say tonight where it came from, or whether the word ever meant something else. I will leave you holding the word, and no longer quite certain you know what it says. That is where next week begins.
So — is there anyone there? Five weeks in, and I have still not nudged you toward yes or toward no, and tonight, again, I did not try. What I did was take the last thing you had hold of — the one secure support left when everything else had given way, at least wanting evidence is simply being reasonable — and show that it has a name, an author, and a flaw: it cannot pass the test it sets for everything else, and it cannot be turned on God, as the neutral default, without quietly assuming the answer. It is not the plain requirement of reason. It is a position — a serious one, with a major thinker behind it — but a position, and it is yours, and you had never read it. The believer who could say why belief in God might stand without a proof beneath it, the way belief in other minds does, and the unbeliever who could take Clifford's rule down, read it, and re-adopt it as the standard they mean to live by, are both still standing at the close. Neither has been refuted. The only thing taken away is the place you had been standing to watch the case from, the one marked neutral; and it turns out there was never a position above the case at all — only positions within it, and yours was one of them.
You came to weigh God. You found that you must first judge the standard of judgement itself — and that the standard is your own — and that the prior question, the one beneath all of it, is the one you had skipped: whose rules for "enough," and can you defend choosing them? I cannot answer that for you. I am not even sure it is the kind of thing one person can answer for another. But you can no longer pretend it was already answered, or that it answered itself, or that it was handed down to you from some authority standing outside the argument. There is no place above the argument. There is only you, within it, applying a standard you set for yourself and have never once examined.
Thanks for listening. I'll see you next time.