Suppose you have decided the old foundation is gone. The word "good" no longer measures a life against some larger purpose, because no one agrees there is one. You are a practical person. You do not need the old story to be decent, and you would rather not spend your life mourning it. So you set out to supply the foundation yourself — to rest morality on something everyone can accept. The question is what.
Most of us reach for one of three things. The first is fairness: whatever rules we would all agree to if no one could weight them in their own favour. The second is reason: surely a clever enough person, thinking hard and honestly, can simply work out how we ought to treat each other. The third is feeling: we know, underneath, that cruelty is wrong — we feel it — and perhaps that is enough. Each seems, at first, to be a base everyone could accept.
Then a difficulty appears, and it is the same difficulty each time. You say "the rules we would all agree to," and someone asks: agreed to by what standard? — and the word "fair" turns out to have been carrying, all along, the very thing you were trying to build out of it. You say "any reasonable person can see it," and "reasonable" is doing all the work; you cannot say what makes a person reasonable without settling the answer in advance. The support you reached for rests on the same ground you were trying to replace.
That is the difficulty this episode is about. It is not a trick played by a word someone sold you. It sits under the repair itself — under the thing you were going to build to make the problem go away.
This is Philosophy for Us — philosophy for everyone, no degree required.
This is the third of eight episodes on one move this show keeps making, and what it costs. Last time we examined the word "good" itself. It once measured a life against what a human being is for; that standard was dropped a couple of centuries ago; and since then the word has done little except register approval or disapproval. Tonight: the people who saw that hole and tried to fill it — on reason, on feeling, on a fair agreement — and what happened when they tried. And then the serious people who say the whole repair was a mistake from the first day.
Last time I said I would let the loss stand at full strength and then find out whether anyone can answer it. So let us find out.
Let me show you the exact shape of the problem, because once you can see it you will see it under every attempt at repair of the last three hundred years.
Remember the good watch and the good knife from last time. A watch is for telling the time, so a good one keeps time and a bad one runs slow; a knife is for cutting, so a good one cuts clean. The word good takes its meaning from the purpose underneath it — the what-it-is-for. Remove the purpose and "good knife" means nothing. Good for what?
Here is the move the old world made, and it is the one we lost. It said a human being is like that too. Not built for a single task the way a knife is, but still: there is such a thing as what a human life is for, what it aims at, what a person would be if they came off well, the way a watch comes off well. And so "a good person," "a good life," measured a human being against that — against what a human is for — exactly as "a good knife" measures a knife against cutting. That is where moral good took its meaning. To call a life good was not to report that you approved of it. It was to say the life answered well to what a human being is for. The word measured something.
Now remove that purpose. That is what the last few centuries did, for the reasons we touched on last time: the shared sense of what a human being is for came apart, and people stopped believing there was one answer underneath all of us. Remove it, and look carefully at what is left, because it is the whole episode.
On one side you still have facts about human beings — a great many of them. What we want, what we fear, what makes us flinch, what we evolved to do, how the brain behaves when we are angry or in love. A whole science of how humans are. On the other side you still have the thing morality is there to say: how a human should live. What is good. What is owed. What must never be done. Two sides. And between them there used to be a step. The step was: and this is what a human is for. That was the middle term that let you move from "humans are like this" to "so a human should live like that." Take the middle term away and the two sides simply sit there, facing each other, with nothing joining them.
This is the heart of tonight's story, so let me state it as plainly as I can. The claim is that no amount of facts about how humans are will, by itself, add up to a single claim about how a human should live. Not because the facts are wrong, or too few. The claim is that a step is missing between the two — and that the missing step is the one we threw away. Hold that as a claim for now, a strong one, not a verdict; we will spend the rest of tonight testing whether it holds.
David Hume saw something like this almost three hundred years ago, in his Treatise of Human Nature of 1739, and he put it about as cleanly as it has ever been put. He noticed that one writer after another would reason carefully about how the world is — how people are, what human nature is like, what God is like — and then, without warning and without a connecting step, the sentences would switch to what we ought to do. Is, is, is — and then, suddenly, ought. He stopped and asked the plain question no one was asking: how did you get there? You were describing how things are. Now you are telling me what I must do. Those are different kinds of claim. Where is the step between them? And no one could supply the step — because the step they had all been standing on, the what-it-is-for, had been quietly removed from under them, and they had not yet noticed.
That gap — between is and ought, between how we are and how we should live — is what remains once the middle step is gone. And every repair we are about to watch is an attempt to close it: to build the ought back up from facts on the is side alone. Watch closely, and watch whether any of them succeeds, or whether each one comes up short in the same place.
So they tried. The best minds of the modern age, and they did not try carelessly. Each one took a different material from the is side — from the facts we still had — and tried to build the ought back out of it. I am going to give you this next part as the loss-story gives it: as a series of honourable failures, each coming up short in the same place. You have to feel that version at full strength before you can judge it. But keep one thing in mind throughout: this is a case being made, the strongest form of one side, not a verdict I am handing you.
The first attempt is feeling. This was Hume's own answer, and it is the most honest of the three. If the purpose is gone, he in effect said, then stop pretending good reports a fact at all. Morality is not something you work out by reason, like a sum. It is something you feel. Cruelty is not wrong the way two and two fail to make five; it is wrong the way a thing is sickening. You have a sentiment, a recoil, and that recoil is most of what "wrong" ever amounted to. So rest morality on the passions, on human feeling, which we have in endless supply. There is something right in this. Most of us, honestly, will admit that the sense of something as monstrous arrives in the body a moment before any argument does. But notice where it stops short. Your feelings tell me how you are — what you, in fact, recoil from. They do not tell me what I ought to recoil from. Sit a man in front of cruelty and he feels nothing: you have not shown him he is mistaken, only that he is made differently from you. Feeling is on the is side. It is one more fact about how a person happens to be. You can stack facts about what people feel as high as you like and never cross to what anyone should feel. The gap is where it was.
The second attempt runs in the opposite direction: reason. This is Kant, in the Groundwork of the Metaphysics of Morals of 1785, and it is the most powerful attempt anyone has made. Set feeling aside — feeling comes and goes. Rest morality on reason alone, the one thing every thinking being shares. A fully rational person, Kant argued, can work out the moral law almost the way one works out a proof: act only in a way you could honestly will everyone to act. Could you will everyone to lie when it suits them? No — the whole practice of promising would collapse, and you would undermine the very thing you relied on. So lying is ruled out, and you reached that by reason alone: no God required, no shared purpose required, only a mind thinking straight. This is an impressive achievement; it still drives half our moral intuitions, every time we ask, "what if everyone did that?" But here is what reason kept failing to supply, and Elizabeth Anscombe, in a 1958 paper called "Modern Moral Philosophy," named it more sharply than anyone. Kant's morality keeps the full force of a law. You must. You are obligated. You owe it. The words carry the weight of a command, a verdict handed down. But a command needs someone to issue it. That heavy "ought" — the binding one — grew up inside a world that had a lawgiver: a divine judge, a real sentence for a real offence. Remove the lawgiver and go on using the word, Anscombe said, and what you have is a law with no court behind it — the sense of being commanded with no one there to command. Reason can tell you when you are being inconsistent. It cannot, by itself, place you under obligation. The "must" that Kant needed keeps the form of a verdict from a court that no longer sits.
The third attempt is the honest dead end: choice. Once feeling has come up short and reason has come up short, one place is left. Perhaps there is no foundation down there at all. Perhaps, at the very bottom, you simply choose — you stand at a fork, the serious moral life down one road and a life of mere pleasure down the other, and no reason can tell you which to take, because reason has already looked and come back empty-handed. So you choose without a reason. Kierkegaard — at least on the reading that matters tonight, which is one reading of him and a contested one — looked straight at this and did not flinch: at the very bottom, the choice to live a moral life is a choice with no reason under it that is not already standing on one side of the fork. It is the bravest of the three, because it takes no comfort. But see what has become of the repair. We set out to rebuild the foundation — to put the binding "ought" back on firm ground. We have arrived at: there is no foundation; you choose in the dark and call wherever you land "good." That is not a foundation. It is the admission that the foundation is gone, said aloud by the one man honest enough to say it.
Feeling, reason, choice. Three materials, three serious attempts, and each comes up short in the same way. Each can tell you how humans are — what they feel, what is consistent, what they choose — and none can carry you to a binding this is how a human should live, because the step that once carried that weight is not there to stand on. And before you reassure yourself that this is old news, long since repaired: the most rigorous attempt of the last fifty years, by Alan Gewirth, in Reason and Morality of 1978, tried to derive the whole of morality from nothing but what any agent must be committed to simply by acting at all — the purest version yet of building the ought out of the bare is of being an agent. It is tight, admired, widely studied. And the same gap opened under it. His critics kept finding the same weak point — the place where "what I must assume in order to act" quietly becomes "what I therefore owe to everyone else" — and it could never quite be closed. The attempts get better. The gap stays where it is.
Now I have to be honest about what I have just done, because it matters for what follows. I have told you a story — a powerful one — in which every attempt to rebuild morality without the old purpose was doomed from the start, doomed by a gap that cannot be closed. From inside that story it seems unanswerable. Every failure confirms it; the next clever person comes up short and you nod, of course. But step back one pace and notice something about the story itself: it is very convenient for one camp. It is exactly the story you would want to be true if what you wanted to say was that we must go back — recover the old whole, restore the lost purpose, because the new foundations were never going to hold. Keep that in mind. Because the next thing I have to do is take you to two groups of thoughtful, living people who heard this whole story and gave the same answer back: no. You have rigged it.
Two refusals. They come at the story from opposite sides, and an honest person should feel the pull of both.
The first refusal says: you do not need to rebuild it. This is the liberal answer, and it is not a shrug — it is a serious, positive proposal about how grown people actually manage to live together. Yes, the shared purpose is gone. Yes, we no longer agree about what a human life is finally for; some say God, some say family, some say freedom, some say nothing in particular, and we are not going to settle it. The mistake, this camp says, is to treat that as a disaster that must be repaired before we can go on. It is not a disaster. It is the permanent condition of free people, and the grown-up response is to stop mourning it and get good at it. You do not need everyone to agree on the meaning of life. You need fair rules — rules we could all accept while still disagreeing about everything beneath them. One careful version asks you to picture settling the basic rules of a society before you know who you will turn out to be inside it — rich or poor, devout or doubting, strong or weak — so that you cannot weight the rules in your own favour; the rules you would still accept without knowing your place are the fair ones, and they need no shared purpose to hold them up, only fairness. Another version says a rule is fair only if every person it would bind could accept it after a free and honest argument, with no one silenced and no one bullied. Notice what these proposals are not. They are not trying to supply a new foundation of shared purpose at all. They are saying you were never standing on a foundation of shared purpose in the first place. You were standing on the plain practice of owing each other reasons — and that practice is alive, and it is enough to live on. The argument that never ends is not a disease we caught when the purpose died. It is simply what free people do instead of all agreeing.
That is a real answer, not an evasion, because it explains the very thing you actually live with — disagreement that will not resolve — without calling it a ruin. Perhaps the whole loss-story, the one I spent the first half of tonight making you feel, is only a longing for an agreement we are better off without.
The second refusal comes from the opposite side, and it should unsettle anyone who accepted the loss-story in the first half. It says: you certainly can rebuild it, and you need no grand purpose and no lawgiver in the sky to do it. The story cheated by pretending the only possible ground for "good" was some lost cosmic plan. The way in is back through the watch and the knife — and now the wolf. Remember that "good knife" takes its meaning from what a knife is for. Philippa Foot, in her book Natural Goodness of 2001, lays this out about as plainly as anyone, and her claim is that living things work the same way, with nothing mystical or lost about it. A good wolf is a wolf with the qualities a wolf needs to live a wolf's life — to run with the pack, to hunt, to raise its young. That is not your opinion about wolves. It is a plain fact about what this kind of animal needs in order to flourish as the kind of animal it is. A good oak is one that sinks deep roots and grows sound timber, because that is what it takes to thrive as an oak. And a human being, Foot says, is a living thing too — a particular kind of social animal — so "a good human," and the virtues, are simply what a creature like us needs in order to flourish as the kind of creature we are. Courage, honesty, justice: not commands from a vanished God, not private feeling, not a bargain struck in a committee, but the natural requirements of the human form of life — owed in the way deep roots are owed to the oak. And if she is right, look at what has been handed back. The demanding good — the one that can turn to the man who feels nothing at cruelty and tell him he is actually wrong, not merely wired differently — returns. With no purpose dropped from the heavens and no choice in the dark: only a sober look at what kind of animal a human being is, and what it takes for one to go right or badly wrong. Foot argues that the gap the whole first half insisted could never be closed was never really there.
Now I owe the loss-story its reply, because it has one, and it is pointed. To Foot, and to the rebuilders, the reply runs like this. That move only looks like reading a fact off nature. When you tell me what a wolf needs in order to flourish, we mostly nod, because a wolf's life is a simple thing. But the moment you tell me what a human needs in order to flourish, you have to fill in a picture of the good human life — and that picture is never simply read off the biology. Is the flourishing human the contemplative one, lost in thought? The holy one, on their knees? The free one, who bows to no master? The loyal one, who would die for the family? The cheerful one, who travels light? People have gone to war over which of these is a human being at their best. So when Foot reads the virtues off human nature, the reply goes, she is not reporting a bare biological fact like the wolf's teeth. She is quietly working from a particular picture of what a human is for, and that picture came from a particular place, a particular history, a particular way of living — not from a microscope. The purpose she said we could do without has come back in, this time dressed as biology.
That is a real reply. And here is exactly what I am not going to do with it: tell you it wins. Foot's side has an answer to it too, and the answer runs another round, and then another, and it is live right now, this year, among people who are far deeper into this than you or I are. Whether human flourishing is a plain natural fact or a borrowed picture dressed as biology is not settled. I am not going to slip you a verdict, because there is none to slip. And it goes the same way for the liberals: whether their fair procedures really stand on their own, or whether they too quietly rest on some picture of what people are owed that they got from somewhere and did not admit — that question is just as open.
So look at the real shape of where we have landed, because it is not where the first half was steering you. You are holding a powerful story that says the repair was hopeless and we are living in the ruins of a purpose that died. And you are holding two genuine refusals — from people who have given their lives to this — each saying that the story rigged the table: one says we never needed the purpose, that fair reasons between free people are foundation enough; the other says we can rebuild the purpose from plain facts about being a human creature, with no ruins and no price. Three live options. And I am not, tonight, going to tell you which is true. Not because I am being coy, but because the people who do this for a living have not settled it — and pretending they had, handing you a winner, would be the exact false reassurance this show exists to expose.
Let me say plainly what you hold now that you did not an hour ago — and the gain is real, even though we have settled less tonight than on almost any night so far.
You came in with a loose sense that the old foundations of morality were gone, and that this was probably bad. You leave with two sharper things. The first is the reason the loss is so hard to undo — not merely that the foundation is gone but why putting it back has been so hard: the missing step between how humans are and how a human should live, and three centuries of able people trying to close that gap — on feeling, on reason, on bare choice, and one of them, a generation ago, on the sheer fact of being an agent — each, on that story's account, coming up short in the same place. You can see the shape of it now, not merely feel it. The second thing is the pair of refusals that say that account cheats: one says you never needed the foundation, the other says you can rebuild it without paying any price. You are holding all three at once — the loss, and the two denials of the loss — and you cannot yet settle on any one of them. That is not unhelpfulness on my part. It is the honest condition of the question, and you now know it from the inside rather than on anyone's say-so.
This is the third of eight, and notice that the material has quietly stopped being review. The first two episodes were the part where you could nod along, comfortable and expert. This was the part where it turned genuinely hard. And the next part is where it stops being about old books at all.
Here is where we go. So far this has all been a matter of ideas — gaps, foundations, arguments three centuries old. Next time it becomes concrete. The breakdown we have been tracing is not only a problem inside an argument; next time it appears in ordinary life, in a form much harder to hold at arm's length. That is where the diagnosis stops being something you think about and becomes something you recognise. That is where we go.
Before then, one exercise on your own — because you only really own tonight's move once you have run it on something no one set up for you in advance.
Here is the case. Not good, not wrong. Tonight: human rights. It is most likely the actual foundation you stand on; most of us stand there now. When everything else is in dispute, you can still say that every person has rights, simply by being human, and that this is not open to negotiation. It is the modern bedrock. Now run tonight's move on it. Look for the step that holds it up. Say it aloud to someone who pushes back — someone who simply asks, says who? grounded in what? — and watch what you reach for next. You will reach for something like human dignity, or what every person is owed, or what it means to be human. Then check whether what you reached for touches the ground, or whether you have only restated the first claim in a more solemn voice. "What every person is owed" was the thing you were trying to hold up, not a support beneath it. And "what it means to be human" is a picture of what a human is for — the very thing we spent tonight watching people lose, and fight over, and fail to read off biology. Perhaps it holds anyway. Perhaps, like Foot, you can rest human rights on sober facts about what our kind of creature needs, and stand there with a clear conscience. Or perhaps it does not hold, and you find that human rights rest on the same missing step you have been calling a foundation. I am not going to tell you which. Test human rights, and find out what is really under it — or find out there is nothing under it but how firmly you happen to be holding on, which is its own kind of thing to learn.
And then what tonight leaves in your hands, the one I am still carrying myself. You came in thinking the question was whether we can rebuild what we lost. You leave unable to settle something stranger and worse: whether we lost anything at all. Whether you are standing in the ruins of something that genuinely died — or on new ground that is perfectly sound, and you have simply not yet learned to trust it. The same world, the same facts, two entirely different things to be living inside — and tonight gave you no way to tell which is yours. You came in asking whether we can rebuild what we lost. You leave unsure we lost anything at all. And no one — not I, not the people who do this for a living — is going to walk up and hand you the answer to that. It is yours to carry.
Thanks for listening. I'll see you next time.