Last week this series asked you to think of a piece of music you had heard so many times it had lost its effect — every note still there, and nothing left in it. Tonight, consider the opposite case.
Because you have one of those too. A piece of music you have heard not a hundred times but a thousand, every phrase familiar, and it has not lost its effect. You put it on last month and it still did what it has always done. It may even have changed on you — you heard something at forty that was not there at twenty, not because the recording changed but because you had lived enough to hear it. The same four minutes, richer for the wear rather than poorer.
And it is not only music. There is the person you have loved for thirty years without growing bored, and the not being bored costs you no effort. There is the work you keep returning to — a garden, a proof, some made thing — that you cannot finish, not because you are slow but because it keeps opening: another question behind each answer.
Now set that beside last week. Last week's argument held that the things that make a life worth living are finite — that you can love anything only a finite number of times before it is spent, and that stretched across centuries this produces Elina Makropulos, three hundred and forty-two years old, with nothing left that can move her. On that argument, tedium is not a risk of an endless life but its destination.
And here is the unwelcome thought — the same shape as last week's, pointed the other way. Is that actually true? Is it true that everything runs out? Because you have just recalled a piece of music that did not, a person who did not, and a piece of work that will not. The argument says the sources of meaning are used up in time. Your counter-cases suggest that some of them are not. Which is right — and how would anyone know?
There is a philosopher who puts exactly that question to Williams. Not a salesman, not an enthusiast with a longevity pill to sell, but a careful thinker who reads last week's argument and says it assumed its most important step without ever proving it.
This is Philosophy for Us — philosophy for everyone, no degree required.
This is the sixth of eight episodes on whether you should want to live forever. Here is where we stand. Last week Bernard Williams put the first serious argument against the sentence this series began with — that more life is always better. His case was that an endless life goes one of two ways, tedium or the slow replacement of yourself by a stranger, and that the ending we have spent the series fearing may be part of what gives a life its stakes. We built that argument at full strength. And I said twice, so that you would not hold him too tightly, that Williams does not get the last word.
Tonight is the reply. The philosopher is John Martin Fischer, and his case is that Williams proved less than he appeared to — that the tedium and the running dry were assumed, and then called necessity. Fischer's demand is simple: necessity is a strong word; show me. And by the end tonight the comforting answer many of us reached for last week — that we should not want to live forever, that mortality is wisdom — will be left just as unsupported as the answer it replaced. Neither will stand.
Let me start with something honest about last week. When Williams's argument landed — when it became clear that an endless life might go dead, that the very thing you feared might be part of what gives a life its stakes — many listeners will have felt something underneath the discomfort: a kind of relief. For five weeks this series has been taking settled answers away, and here, at last, was something to hold on to. You do not have to want to live forever. Wanting to die at the right time is not giving up; it is wisdom. Death is what gives a life its point. It felt like an answer, and it was welcome.
I want to name that relief, because it is exactly what tonight is here to remove.
Look at what the relief actually is. It is a reach for a new easy answer to replace the old one. Last week the series retired one certainty — that of course you should want to live forever. And the moment it was gone, you reached instead for its exact opposite: of course you should not. The same shape, the same comfort, the same of course. You exchanged one certainty for its opposite, and the exchange felt like wisdom only because it was the opposite verdict. But it is the identical move the series caught last week — taking a verdict you have not earned because being left without a verdict is uncomfortable. As I said last week, when I would not let Williams win outright: of course you should not want forever is exactly as cheap as of course you should. Tonight that has to be made good, by bringing in the philosopher who makes it good.
His name is John Martin Fischer, an American philosopher, still living. The first thing to know about him is what he is not. He is not selling anything — no pill, no supplement. He is not the technology enthusiast from the first episode returned for a second attempt. He is a careful, sober philosopher who read Williams — read the Makropulos argument as closely as anyone has — and came away unconvinced. Not unconvinced in the way you dismiss a conclusion you dislike, but unconvinced that the conclusion had ever been proved. His question to Williams is direct: which step in your argument shows that an endless life must go dead? Point to it.
Here is the step Fischer points to.
Return to Williams's argument and find the exact claim it turns on. It is this: that your categorical desires — the wants that give you a reason to be alive — must eventually run out. The projects must finish, the loves must fade, the sources of meaning must be exhausted. Everything in Williams depends on that single claim. The frozen woman, the tedium, the self replaced by a stranger — all of it follows only if the things you live for are guaranteed to be used up given enough time. Remove that claim and the whole structure falls.
So Fischer removes it. And he asks the question the counter-cases were already raising earlier tonight: did Williams prove that the sources of meaning run dry, or did he simply assume it?
The answer, on inspection, is that he assumed it. Williams gives us Elina, and Elina is emotionally spent, and it is a powerful portrait. But a portrait is not a proof. Williams shows one immortal who ran out; he does not show that every immortal must. He describes a life that went stale and invites us to feel that the staleness lies in the nature of endless life itself. Fischer's reply is that this is a feeling, not an argument. Williams has shown one woman who grew bored. He has not shown that boredom is the necessary end of any endless life. And the distance between those two claims is the distance between the argument standing and falling.
Be careful here, because this cuts in a direction you may not welcome. Fischer is not saying Williams is wrong. He is saying Williams has not earned the conclusion — that the crucial sentence from last week, that the things you live for must run dry, was let through without argument, in just the way "more is always better" was let through unexamined back in the fourth episode. Williams caught you assuming a conclusion without proving it. Fischer says Williams did the same.
And that should be uncomfortable, because last week you wanted Williams to be right. He supplied the moment of relief. He offered the wisdom of letting go. And here is a careful thinker pointing out that the wisdom rests on a claim Williams never proved. The relief was real. What produced it may be unfounded.
So tonight asks for the hardest version of the exercise this whole series runs on. For five weeks the task has been to build up the view you wanted to dismiss, then the view you held, then the view you resisted. Tonight is harder still: to build up the view you wanted to be false — because if it holds, you do not get to keep the comfort you grabbed last week. The task is to build Fischer's case: that an endless life could be fine — not a curse, not a slow freeze, but more of exactly what makes a good life good — and to build it until Fischer himself would agree it had been stated correctly. Even while part of you is now rooting for Williams, precisely because Williams grants permission to stop.
Let me build Fischer's case the way Williams's was built last week. At full strength, no padding. It has three parts, and they come next.
Three parts. Build them as they come — not nod along, but build — because at the end the task will be to state the whole case back cleanly enough that Fischer would accept it.
One. Not every good is used up by repetition. Some reset.
Williams's picture runs on the worn-out song — the good that goes dead when repeated. Some goods are exactly like that. But consider how many are not. You eat a good meal tonight, and it is good. You are hungry again on Thursday and eat another, and it is good again — not a faded copy of Tuesday's, but good in its own right, completely. Sleep, when you are tired. Cold water, when you are thirsty. The body resets, and the pleasure resets with it. Fischer calls these repeatable pleasures, and the plain point is that a repeatable pleasure does not keep a running total that gradually fills up. It empties between uses. The thousandth good meal is not one-thousandth as good as the first; that is not how hunger works. So some of the goods of a life are not a fixed quantity you draw down. They renew. And if even some of them renew, then "everything runs out" is already false as a general rule. Williams needs all the goods to run dry. Fischer needs only some of them not to.
Two. Some of the things you live for were never the kind of thing that finishes.
This is the deeper part, so take it slowly. Williams pictures a categorical desire as a task — the book to be finished, the child to be seen grown. And tasks get completed. Finish the book, the child grows up, and the want is spent; you need a new one. Fair enough. But not every reason to be alive is a task with a finish line. Consider understanding — genuinely understanding something: the world, a person, a piece of music. You do not complete understanding and file it away. It opens; each answer leads to a better question. Consider making things: the composer at seventy is not running out of music for having used up the good notes. Consider loving someone: there is no day on which you have finished loving your child and require a fresh project. These are what Fischer calls open-ended — not tasks that end but engagements that deepen, that produce their own next step out of themselves, without a natural stopping point. Williams's frozen-woman argument assumes that your reasons to live are all tasks. Fischer's reply is that some of the best of them are not tasks at all. And you cannot run out of a thing that has no end.
That is where tonight began, come round again — the work that keeps opening another question, the person you are not bored of after thirty years. These were not flukes. They may be the shape of the deepest goods.
Three. Yes, you would change. No, that is not death.
Now Williams's second and harder worry, the one raised last week. Even if new wants keep arriving, he says, the price is that you slowly turn into a stranger: to keep acquiring genuinely new passions for a thousand years, you would have to keep becoming someone else, until the immortal is not yourself at all but merely someone bearing your name.
Here Fischer says: look at what that worry assumes. It assumes there is a hard fact about where one person ends and the stranger begins. But the series has been here already. Return to an earlier series of this programme — the one on whether you stay the same person across a life — which took apart what makes someone the same person over time. What it found was that you share almost nothing with yourself at six years old — not the beliefs, not the cells, barely a memory. The six-year-old wanted things you would now find baffling; you want things the child could not have understood. By Williams's own measure, that child is a stranger. And yet no one — not you, not Williams — calls growing up a death. We call it growing up. So when Williams says the immortal becomes someone new, Fischer answers: yes, of course; so does everyone. You at sixty are someone new compared with yourself at six, and no one died along the way. Becoming new while carrying yourself forward — keeping some parts of yourself, letting others go, exactly as you have done throughout an ordinary life — is not the self dying. It is the self living. Williams needs "becoming new" to mean "becoming no one." It does not. It means only staying alive long enough to keep changing, which is the only way anyone has ever stayed alive.
Put the three together, because this is the whole of what Fischer offers. The goods of a life do not all drain away; some renew each time they are spent. The deepest reasons to live were never tasks with a finish line; they have no natural end. And the change you would undergo across an endless life is not the loss of yourself; it is the same growth you already call being alive. So Williams's two outcomes — a frozen life, or a stranger — are not the only two. There is a third he passed over: yourself, carried forward, still finding the next question, still hungry again on Thursday, still changing, and the continuing still worth it. Which is exactly what Williams insisted was never available. Fischer says it was available all along; Williams simply did not prove it was not.
That is the case, at full strength, nothing held back — built the way Williams was built, the way Nagel was built, the way every view this series has taken seriously has been built.
So state it back. Take Williams's frozen woman and answer her as Fischer would. Not "I dislike that conclusion," but the argument: which of her goods had to go dead, and was it the renewing kind or the finishing kind, and did three hundred years prove the sources of meaning were exhausted, or only that this one woman stopped drawing on them? Build it until Fischer would agree.
And then — only then, once we have built him honestly — we find out how much of it he has actually earned. Because Fischer does not win tonight either. No one does.
Now the part that does to Fischer exactly what last week did to Williams. We have built him honestly; now we establish what he has earned and what he has not. Because to let anyone leave tonight with "Fischer wins, an endless life is fine after all" would be to do the very thing this series keeps refusing to do. Slowly, then — this is the point of the episode.
Take his three parts back one at a time, and test each.
The repeatable pleasures — the meal, the cold water, the good that renews. Real, as far as it goes. But watch how far it goes. Fischer has shown that a good meal does not keep a running total that fills up over a week. He has not shown that it survives ten thousand years. There is a difference between a pleasure that resets between Tuesday and Thursday and a pleasure that still resets after you have eaten well, attentively, every day, for forty centuries. Perhaps the reset itself wears out. Perhaps the ten-thousandth excellent meal is still good in the mouth and yet arrives at a person who has had ten thousand of them and can no longer be reached by one. Williams can accept the renewing pleasure and reply: you have shown that it renews on the scale of a human life; the question was always the other scale, and you have not been there. So the repeatable pleasure answers one worry and leaves the deeper one standing.
The open-ended projects — understanding, making, loving, the engagements with no natural end. This is Fischer's deepest part, and it is worth seeing exactly what it is. It is a claim that some goods are inexhaustible — that you could never, even in principle, exhaust understanding or love. That may be true. It may be exactly true. But notice that Fischer has not proved it, any more than Williams proved the opposite. He has asserted it, pointed to the way understanding opens a further question, and invited us to feel that it opens questions forever. That is the same move Williams made with Elina — pointing at a feeling and treating it as a law. Williams points at the sources being used up and says: there, they run out. Fischer points at the opening question and says: there, it never stops. And here is the hard fact: neither of them can go and check. The only way to learn whether love or understanding is used up after a thousand years is to love and understand for a thousand years, and no one has, and Elina is a character in an opera. Both men are making a claim about what desire does across unlimited time. Neither has been there. One is wagering that the sources are inexhaustible; the other, that every source he has ever seen was used up in the end. These are wagers — serious, argued, honest wagers. They are not proofs, and they cannot be, because the evidence would take unlimited time to gather.
And the third part, the one that most needs care, because it is where you will want to let Fischer off lightly. You would change, but that is not death. Fischer leans on an earlier series — the one on whether you stay the same person across a life: becoming new is not becoming no one, because you already became new since the age of six without dying. True. But test it the way that earlier series taught, all the way, on both men. Yes — that work weakened Williams's horror; "you would become a stranger" stops sounding like a catastrophe once you see that you are already a stranger to the six-year-old and call it growth. But the same reasoning tells against Fischer. For if the self really is that thin — if "you" is only a run of overlapping psychological connections with no deep fact holding it together — then Fischer does not get to say that you carry on through the centuries either. Whatever unsettles "you would become a stranger" equally unsettles "it would still be you, carried forward." That earlier series did not hand the endless life to Fischer. It dissolved the question both men were leaning on. The honest result is neither "the immortal is still you" nor "the immortal is a stranger." It is that across that much time the word "you" may no longer be able to do the work either man needs it to do. That is not a win for Fischer. It is an unresolved question that neither man can turn to his advantage.
So here is where matters settle, and it is not where you wanted them. Fischer has done something real — the same size as what Williams did last week, pointed the other way. Last week Williams undermined "of course an endless life is good." Tonight Fischer undermines "of course an endless life is empty." The comfort you grabbed — mortality is wisdom, I am well rid of the wish — he has removed its support, exactly as Williams removed the support from the pill. You can no longer say "an endless life would be empty" as a plain fact. There is a serious philosopher with a real argument that it would not be, and he cannot be un-heard.
But — and this is the discipline, the same one as last week, run a second time — Fischer's undermining Williams is not Fischer beating Williams. "An endless life could be fine" is not "an endless life would be fine." He has shown that Williams did not prove the sources are used up. He has not shown that they are not. To leave tonight thinking "good, that is settled, the pill is back on" is to take an unearned verdict a third time, to reach for the third of course. That is not on offer. The contrarian comfort is set aside; the technology enthusiast's comfort is not being restored in its place. Both are gone. What remains is two serious people, each holding a real argument, neither holding a proof, on a question whose evidence lies — by the nature of the thing — beyond where any of us can go and look.
Gripping, both of them. Proved, neither. And you are left standing exactly between them, with no verdict to take hold of — which is, I know, the least comfortable place this series has left anyone yet. It is also the truest. Two weeks ago there was one answer. Last week it was traded for the opposite answer. Tonight there is neither, and you can at last see the whole disagreement instead of hiding in one corner of it.
Let us take stock, slowly, as we do — and more slowly tonight, because tonight something was taken away and nothing was put in its place, and that has to be counted carefully so it does not feel like robbery. It is not robbery. Consider what you actually have.
Two weeks ago you arrived certain of a single thing: of course I would take the pill; of course more life, forever. Last week Williams undermined it, and you reached for the opposite: of course not; mortality is wisdom. Tonight Fischer undermined that. So here is the real account. You arrived with one easy answer. You now have none. Both "of courses" are gone — the one that says seize forever and the one that says forever is a trap. And that is not less than you arrived with. It is the very thing you arrived without: the ability to see that there is a real disagreement here, with real opponents, rather than a settled fact you had never noticed you were assuming.
So count the disagreement honestly, because it is larger than it was an hour ago. Is death even a harm? Still open: Epicurus says there is no one present for it to hurt; Nagel says it deprives you of everything that would have followed. Neither has defeated the other; the third episode left it open and nothing tonight touched it. Is more life always good? Also open — and this is what changed tonight. A week ago that question had a single occupant, Williams, arguing no, and it seemed the matter was closed. It was not. Fischer is in it now, arguing back — show that the sources run dry — and the two are evenly matched, because neither can supply the evidence, which would require a thousand years no one has lived. Two questions. Four serious people. No verdict handed to anyone. That is not a thinner place than the one we walked into. It is a far larger one, and you can finally see the whole of it.
And the discipline, once more, because it is the governing rule of the series: I have not said Fischer is right. "An endless life could be fine" is not "an endless life would be fine." The contrarian's comfort has been taken away; the technology enthusiast's comfort has not been handed back. Anyone who says tonight settled the matter in either direction is offering the same cheap of course you have now watched fail twice. Do not accept it a third time.
That is where next week goes, and it goes somewhere stranger than another contestant. Notice what Williams and Fischer have in common: all night, both have been doing the same thing — placing an endless life on a scale and trying to weigh it. Good or bad? Worth it or not? Next week a philosopher arrives who says the reason you cannot settle the weighing may be that the question itself is malformed — that weighing a life against its length is already a mistake — and he approaches your own death from a direction no one in this series has tried. I will not say tonight whether he is right. But it is the first time in the series that someone questions not the answer but the question. Hold that for next week.
Before then, the exercise again — and tonight there is no new case, because the one begun last week is the one we finish.
Last week ended with a hard question. You named a single categorical desire — the real one, the thing you are actually here for — and the question was whether it would survive three hundred years, and it was left unanswered. Tonight, take that same desire and build Fischer on it. Ask the three questions of your own want. Is it the renewing kind — the meal, the cold water — good again each time you come back to it empty? Or is it the open-ended kind, the thing with no end that keeps opening another question? And if you would have to change to keep it alive across all that time, would that be yourself, carried forward, keeping some parts and dropping others as you already have since the age of six? Build the case that your own forever could be rich rather than frozen. Build it until Fischer would agree.
And then — this part is your own, in private, with no one watching — notice that you cannot prove it. You built Williams on this same want last week, and he was gripping. You have just built Fischer on it, and he is gripping too. And you cannot reach the end of either, because the only evidence is centuries you have not lived. So you are left holding your own deepest reason to be alive and genuinely not knowing whether, extended forever, it would sustain you or exhaust you. Do not rush to fill that in. You could not say last week whether it would run dry. You cannot say tonight whether it would not. Both of those unknowns are real, and holding them at once is not confusion. It is the most honest hold you have yet had on the question. You arrived able to weigh forever in a moment. You leave unable to weigh it at all — and finally seeing why.
Thanks for listening. I'll see you next time.