Robert Macfarlane’s Is a River Alive? is luminous, urgent and deeply serious. It is also not quite as watertight as it thinks it is, which may be why it is so worth arguing with.

Robert Macfarlane has always been sold to us as a nature writer, which is a bit like calling Joan Didion a woman with a notebook. Technically true, spiritually useless. He has never really written about “nature” in the soft-focus, birdsong-and-bark sense of the term. He writes about peril, memory, myth, language, trespass and that old human compulsion to look at a living thing and wonder how much money it might fetch if stripped for parts.

Is a River Alive? makes that especially clear. This is not, despite appearances, a book about streams, trees and lovely walks in expensive boots. It is a book about personhood, grief, law, extraction, Indigenous thought, ecological devastation and the strange dead grammar modernity uses to make destruction sound sensible. It is ambitious, vulnerable, often magnificent and just occasionally a little too enamoured of its own moral awakening.

I admired it very much. I also wanted, now and then, to take it gently by the lapels and say: “Beautiful prose, darling, is not the same thing as proof.”

That tension is, really, the whole book. It is also what makes it worth reading.

The title asks the question straight. Is a river alive? Macfarlane does not treat this as a poetic flourish, murmured over a campfire before opening the better wine. He means it. He worries at it. He circles it from legal, philosophical, ecological and linguistic angles, and by the end he is prepared to answer it with unusual seriousness. The book is partly about the Rights of Nature movement, which seeks to give rivers, forests and ecosystems some form of legal recognition, rights or personhood. But it is equally about language, and Macfarlane’s enduring belief that words shape relation, and relation shapes action.

He is right about that. One of the great tricks of modernity has been to reduce the living world into nouns fit for management reports. Resource. Asset. Drainage. Yield. Once something becomes an “it” in the deadest possible sense, once it is no longer kin or creature or presence but infrastructure, it becomes much easier to poison, dam, reroute, extract or bury under a feasibility study. Macfarlane understands this with real acuity. He is very good on the violence hidden inside supposedly neutral language.

And when he is doing that, when he is changing the scale at which you notice and value the world, he is in full command. Few contemporary writers can enlarge perception the way he can. He makes you feel both smaller and more implicated, which is not easy, and not always pleasant.

The structure is elegant too. He organises the book around three river systems, with returns between them to a chalk stream near his home in Cambridge. This is one of the book’s best formal decisions. Without those returns, the whole thing might have become too grand, too global, too sermon-adjacent. Instead, the Cambridge interludes give the book intimacy and rhythm. They remind you that all politics, however planetary, eventually lands somewhere local. Somewhere walked. Somewhere watched. Somewhere loved.

He is not naive about the problems, at least not at first. Early on, he acknowledges the central objections to the Rights of Nature framework. There is the danger of projection, of course. The risk that humans simply throw their own longings into the mouths of rivers and then congratulate themselves for listening. There is the issue of representation, which is not remotely minor. If a river has standing, who speaks for it? By what authority? In what language? With what interests quietly tucked into the lining? And there is the even thornier question of what happens when Indigenous cosmologies of kinship and aliveness are lifted into Western legal systems that were never built to hold them without distortion?

These are not side notes. They are the argument. To his credit, Macfarlane knows that. The trouble is that he does not always sit with the difficulty for long enough. The emotional current of the book runs steadily towards affirmation. Doubt is welcomed in at the front door, but wonder keeps ushering it politely out through the garden.

The Ecuador section is probably the most immediately ravishing and, in some ways, the most satisfying. Los Cedros gives Macfarlane everything he likes best: danger, beauty, complexity, intellectual company and a visible contest between life and extraction. It is his natural habitat as a writer. The legal victory there, where constitutional rights of nature helped protect an ecologically extraordinary forest, gives the book one of its clearest and most hopeful examples of law being used, however imperfectly, against destruction.

The prose here is glorious without becoming slack, which is a difficult line to walk and one he manages well. There is radical beauty, yes, but also pressure. The section works because the ethical and visual argument is so clean. Two waters, one damaged and one alive in a fuller sense, begin to stand for two entirely different ways of seeing the world. It is vivid, persuasive and moving.

It is also where one of the book’s strongest undercurrents becomes unmistakable: grief. So many of the people Macfarlane encounters are mourning someone, or something, or a world already part-lost. The rivers are not just ecosystems or legal puzzles. They become places where memory, mourning and survival gather. That gives the book emotional ballast. It stops it becoming merely activist or merely lyrical. It understands that environmental devastation is never only technical. It is intimate. It alters the terms under which people remember, belong and go on.

Still, even here, the book’s weakness begins to show. Rights of Nature may matter. Clearly they do. But they are not magic. A legal victory is not the same thing as a durable political settlement. Recognition is not enforcement, and naming is not protection. Calling a river alive in law does not put armed guards between it and capital. Macfarlane knows this, but the architecture of feeling in the book sometimes makes fragile gains seem sturdier and more transferable than they actually are. You come away full of hope, which is not nothing, but perhaps not quite as instructed in hope’s fragility as you should be.

The Chennai section, to my mind, is the strongest politically. Here there is no room for abstraction. Damaged rivers are not literary symbols. They are sewage-blackened channels, erased wetlands, collapsing flood systems and engines of classed harm. This is where the book bites hardest, because environmental destruction is shown in its least aesthetic form. Not romantic ruin, not philosophical provocation, but urban filth, structural inequality and disproportionate suffering for the poor.

This section has the least room for reverie and perhaps benefits from it. The stakes are material. The politics are sharper. The whole idea of what counts as environmental writing gets dragged firmly away from the picturesque and into the city, which is exactly where a great deal of ecological argument belongs.

Still, Macfarlane has a habit, and once you notice it, you cannot unnotice it. He likes his human figures a little saintly. Not absurdly so, but enough that you begin to miss mess. Many of his guides arrive already haloed by his regard. They are admirable, lucid, ethically alive. Fair enough, many of them are. But people are also vain, compromised, contradictory, strategic, needy, impossible and occasionally ridiculous. Politics happens among such people, not above them. A book about legal and ecological struggle needs a bit more grit in the gears than Macfarlane always allows. Admiration is not the same as dramatisation.

The Canada section provides the emotional and philosophical climax. The journey on the Mutehekau Shipu is vivid, searching and more persuasive than some of the book’s broader gestures precisely because it is grounded in a specific Indigenous struggle rather than a portable mood of ecological reverence. Rita Mestokosho is its most powerful presence. Under her influence, Macfarlane moves decisively from attentive observer to something closer to participant. He asks the reader, very plainly by this point, to travel with him beyond metaphor.

This is where the central problem becomes impossible to ignore. There is a serious difference between saying a river should be protected, saying a river is a living system, and saying a river speaks, acts, participates in meaning or changes the terms of authorship. Macfarlane glides among these claims with extraordinary eloquence, but not always enough discipline. The prose does a great deal of bridging work. Sometimes too much. Beauty begins to carry arguments that have not quite been earned on their own terms.

That is not a trivial criticism, but neither is it a dismissal. In fact, it may be the most interesting thing about the book. Macfarlane is writing against disenchantment itself. Against extraction, against dead language, against the bureaucratic flattening of the world into units of use. That is a necessary project. But when you write this beautifully, beauty starts behaving like evidence. The reader feels enlarged, chastened, reawakened. Those are real achievements. They are just not identical to philosophical precision or political proof.

And yet I would still say this is a major book.

Because its fundamental insight is right. The modern treatment of rivers as assets, drains, borders or logistical inconveniences is not neutral. It is ideological, historically produced and catastrophic in effect. Macfarlane is right to challenge that. He is right to insist that relation comes before protection. People do not fight for what they have already learned to regard as inert.

Where the book is less convincing is in its occasional suggestion that a change in language, or even legal personhood, can do more work than power will permit. Rights on paper do not enforce themselves. Courts are not holy. Representation is not innocent. A river may be named in law and still be poisoned before lunch. That is not cynicism. It is politics.

But perhaps the point is that Macfarlane is better on perception than on machinery, better on ethical imagination than on statecraft, better on what must be felt before anything can be defended than on the grubby mechanics of how such defence survives contact with capital, bureaucracy and men with plans.

Which is still a tremendous thing to be good at.

So yes, I recommend it. Absolutely. It is beautiful, learned, urgent and often breathtaking. It is also slippery in places, a little too susceptible to wonder and not always hard enough on its own most seductive claims. But books that make you argue this much are usually doing something right. They have entered your bloodstream. They have altered the furniture.

This one certainly has.

My verdict, then: a gorgeous, intelligent, morally ambitious book that is stronger on perception, language and grief than on the harder mechanics of political change. Its prose sometimes glides a little too elegantly over the cracks in its own argument, but its seriousness is real, and real seriousness is rarer than it should be. Read it. Underline it. Admire it. Argue with it all the way home.

Buy it at Chapters Bookstore.