On Monday, Divest Harvard held an alumni rally. Below is journalist and activist Wen Stephenson’s moving speech, which is cross-posted from The Nation.

Let me ask you something: Why are we here? Why are we standing here, in this place, right now? Why are you here?

I’ll tell you why I’m here. I’m here because I’m afraid. I’m the father of two young children, and I’m scared. And I’m here because I’m angry. That’s right. I’m angry. But most of all, I’m here because I’m determined. I’m determined to fight alongside these students for a just and stable future on this planet.

In the fall and spring of 1986 and ’87, as a freshman at this college, I lived on the top floor of Massachusetts Hall. My dorm room—right up there, in the top northeast corner, two floors above the President’s offices—faced out over the Yard, and I have vivid memories of large protests demanding that this university divest from companies doing business in apartheid South Africa. Suffice it to say, it got loud out here. Very, very loud.

And if any of you, here today, were out here then—thank you. I confess, I was too self-absorbed as a freshman to join you. I knew you were right, but I lacked the courage of my convictions. The kind of courage that these students here today have shown in this campaign to divest from fossil fuels. The courage to stand and speak truth to power.

Now, in the past year, since this campaign was launched, we’ve heard from a few critics—and, frankly, from a few cynics. And that’s just fine. We’re getting their attention.

And one of the things we’re told is that fossil-fuel divestment will be ineffective as a strategy to address climate change—that the economics of it won’t alter the behavior of these companies, the wealthiest on Earth. But this misreads—or fails to read—our clearly stated reasons for divestment. The leverage we aim to bring is not simply economic. It’s moral.

And on that score, we’re also told that we have the wrong target—that the fossil fuel industry isn’t the enemy, that we ourselves, as consumers—who, yes, in spite of our best efforts, still depend on fossil fuels—we are the enemy. As though the fossil fuel companies are somehow blameless—despite everything we know to the contrary. And as though the working, poor, and struggling families of this country and every other country are somehow responsible for solving the climate crisis, which they did nothing to create, by themselves—even as they’re forced to rely on fossil fuels, through no fault of their own, simply to put food on the table. This is a basic issue of justice. The wealthiest corporations on Earth have the power to help solve the crisis they have done so much to create, and from which they have profited—and continue to profit—so richly. And they must use it. Not stand in the way of solutions. Not, for God’s sake, deceive the public, deny science, and obstruct solutions.

So we’re told these things, but at the end of the day, what we’re mainly told is that divestment is…well, you see, children, it’s complicated. It’s difficult—for various technical reasons.

No, in fact, it’s really not. It’s not. I mean, come on, this is Harvard—I think we can figure it out!

In fact, what this really means is that Harvard just can’t be bothered. “Climate change, yes, it’s very serious,” we’re told. “Indeed, Harvard’s faculty is contributing much to our understanding of climate change and its solutions. But you see, children, it doesn’t rise to such a level that we would take any such radical or extreme course of action as divestment.”

Only in the rarest of circumstances, we’re told—indeed, only in “extraordinarily rare circumstances,” in the words of the administration—will the university go so far as to divest.

This is what all of us have heard. As though to say, Harvard is a busy place. It has a lot of important things on its plate. All you climate change people will simply have to understand.

Well, climate change people, do we understand? I think we understand all too well.

So let’s consider this language, this boilerplate, emanating from Massachusetts Hall. Only in “extraordinarily rare circumstances” will the university divest.

Presumably such circumstances would include—oh, I don’t know—humans melting the Arctic.

Presumably such circumstances would include humans rapidly acidifying the oceans—and raising them.

Presumably such circumstances would include burning the planet’s great forests. Drying up its great rivers. Flooding its great cities.

Presumably such “extraordinarily rare circumstances” would also include the fact, famously reported by Bill McKibben, class of 1982, that the fossil fuel industry controls in its reserves more than five times the amount of carbon that climate science tells us can be burned, over the next four decades, if we’re to have a chance of preserving a livable climate this century—and the fact that the industry shows every intention of extracting and burning every ounce of it, unless and until somebody stops them, or makes it unprofitable for them to do so.

In other words, it is perhaps among the rarest and most extraordinary of circumstances that the power of a single industry holds the fate of the planet and of humanity in its grip.

Presumably these circumstances are rare and extraordinary.

Here’s what else they are: Given what we’ve known about climate change for decades, to willfully obstruct any serious solution is to knowingly, willfully allow entire countries and cultures to disappear. It is to rob people of their land, their homes, their livelihoods, even their lives and their children’s lives—and their children’s children’s lives. For profit.

There’s a word for this. These are called crimes. They are crimes against the Earth, and they are crimes against humanity. They are crimes against humanity.

So, yes, divestment may be bothersome. It may be—inconvenient. Well, I hate to tell you, but nobody ever said that taking on this crisis would be convenient. Or that business as usual—or academics as usual—would be enough. Nobody ever said it would be easy.

Ask the folks on the front lines of global warming how easy it is:

Ask them on the bone-dry farms out west.

Ask them on the beach fronts of Jersey and of Queens.

Or on the floodplains of Asia.

Or on the drought-stricken plains of Africa.

Or on the heat-stricken streets of Chicago—or of Roxbury and Dorchester. Or Cambridge.

Or ask the people of the disappearing nations of the Pacific and Indian oceans, entire societies going under the waves.

There is nothing easy about the climate fight. Nothing.

And all we ask—all we demand—is that this university stop investing in all this destruction, all this death.

We’re here today, graduates of this proud university, to demand that Harvard divest from fossil fuels, not because it’s easy—though it is. And not because it’s profitable—though it will be. But because it’s right. And because it’s necessary.

“Action from principle, the perception and the performance of right, changes things and relations; it is essentially revolutionary.”

Henry David Thoreau wrote that, in an essay called “Civil Disobedience.” He was a graduate of this College, class of 1837. And in that great abolitionist essay he also wrote this:

“If I have unjustly wrested a plank from a drowning man, I must restore it to him though I drown myself…. This people must cease to hold slaves…though it cost them their existence as a people.”

This university must cease to invest in crimes against humanity—even if the cost were to be its existence as a university.

Fortunately, as we all know—as they all know in that building behind me—the cost will be nothing of the sort. Not even close. In fact, quite the opposite. Divestment may be inconvenient, but it will do no damage to this great institution. It will only make Harvard stronger.

It will reassure the world of Harvard’s leadership.

It will ensure the faith of its alumni in its integrity.

And it will demonstrate to its students and to future generations that it understands the meaning of “action from principle,” of moral courage—of conscience.

And in doing so, it will change things and relations. In taking this principled action, Harvard will live up to its history and its calling. It will be, and rightly so—rightly so—revolutionary.