Theme, examined: corruption of idealism (and when hope curdles)

When we first meet Daniel Plainview in There Will Be Blood, he is not a monster.

He is alone in a pit. Hammering. Climbing. Bleeding. He breaks his leg and drags himself across the desert floor to stake his claim. No speeches. No grand declarations. Just grit.

And if I’m honest, that opening always stirs something in me. There is something almost admirable about the raw will it takes to crawl out of a hole with a broken body and still insist the land is yours.

That is idealism.

Not the sentimental kind. The American kind. The belief that effort earns destiny. That you can carve meaning from dirt if you are willing to sweat long enough.

The tragedy of Daniel Plainview is not that he lacks drive. It is that his drive rots.

Hope curdles.

And by the time we reach the end of the film, what once looked like ambition has hardened into something corrosive.

The seed of belief

It would be easy to say Daniel is selfish from the start. But that flattens the story.

Early on, he speaks about building something lasting. A family business. Schools. Bread on tables. He presents himself as a provider. As a man who understands the value of work and wants to share in prosperity.

Yes, there is calculation in his voice. Yes, he negotiates ruthlessly.

But there is also belief.

I think that matters.

The corruption of idealism only carries weight if there was something to corrupt in the first place. If Daniel had been purely monstrous from the beginning, the film would feel simpler. More straightforward.

Instead, we watch a man who once believed in expansion as progress slowly shift into someone who sees expansion only as domination.

The difference is subtle at first.

Then it isn’t.

Capital as faith

Oil in this film is not just resource. It is religion.

Daniel treats land like a sacred text waiting to be deciphered. He listens to it. Studies it. Kneels in it. There is reverence in his labor.

But reverence slides into obsession.

And obsession, when it centers on control, becomes isolating.

One of the most chilling lines in the film is Daniel’s quiet confession that he hates most people. That he sees in them something he wants to remove. That he has competition in him.

That admission feels like a turning point.

Competition is not evil. It can sharpen skill. It can drive excellence.

But when competition becomes identity, hope disappears. The world becomes a battlefield. Every handshake hides a threat. Every partner is a rival waiting to undermine you.

Idealism requires some faith in others.

Daniel loses that faith.

The erosion of intimacy

His relationship with H.W. is the clearest mirror of this erosion.

At first, Daniel’s adoption of H.W. appears strategic. A family man inspires trust. Investors feel reassured by the image of father and son building a future together.

But there are moments, fleeting and quiet, where Daniel seems to care. He carries H.W. through oil fields. Introduces him as partner. There is pride there.

Then the accident happens.

The oil well explodes. H.W. loses his hearing. Daniel’s attention shifts instantly back to the well, to the business, to the opportunity burning in front of him.

The camera lingers on the child, disoriented and alone.

Something has shifted.

When Daniel later sends H.W. away under the guise of care, it feels less like protection and more like inconvenience management. The son who once helped him appear trustworthy now represents weakness.

Hope curdles into resentment.

And the cost is intimacy.

Ambition without horizon

Ambition can be healthy when it aims toward something beyond itself. A better life. A thriving community. A legacy that extends outward.

Daniel’s ambition narrows instead of expands.

The more oil he extracts, the smaller his emotional world becomes. Wealth accumulates. Companions disappear.

There is a scene late in the film where Daniel sits alone in his cavernous mansion. The space is enormous. The silence is heavy. Success has brought him size but not connection.

He has everything he claimed to want.

He has no one.

That is not accidental. It is thematic.

The film suggests that when ambition detaches from shared purpose, it hollows out the person who holds it. Daniel is not defeated by external forces. He wins. Over and over.

And in winning, he loses.

The rivalry as reflection

Eli Sunday is often framed as Daniel’s opposite. Faith versus capital. Church versus oil.

But the rivalry between them reveals something deeper. They are more alike than either wants to admit.

Both crave authority. Both manipulate belief. Both use language as leverage.

When Daniel humiliates Eli in the baptism scene, forcing him to confess being a false prophet, it is not just revenge. It is domination ritualized.

And when Daniel later reduces Eli to a desperate man begging for money, the transformation is complete.

Idealism has not just curdled. It has inverted.

Daniel no longer wants to build. He wants to crush.

The famous final line, delivered in a bowling alley soaked in grotesque wealth, is not triumphant. It is empty. The declaration of a man who has achieved total dominance and discovered there is nothing left to conquer.

“I’m finished.”

The words land flat. Not victorious. Final.

Spiritual erosion

If we step back, the film reads like a slow moral draining.

Each choice Daniel makes seems justified in isolation. He negotiates hard because that is business. He undercuts rivals because that is survival. He distances himself because vulnerability invites betrayal.

Layer by layer, the justifications accumulate.

And somewhere along the way, the original spark is gone.

I sometimes think about that opening sequence again. The man crawling from the mine. The stubborn determination.

There is something almost noble there.

By the end, that nobility is unrecognizable.

The film does not lecture us about capitalism. It does not deliver a tidy message about greed. Instead, it tracks trajectory. It shows how single-minded pursuit, when untethered from empathy, narrows the soul.

That narrowing is the corruption.

Isolation as endpoint

In the final act, Daniel is not a titan of industry in motion. He is a recluse in a private cathedral of excess.

The house is large. The halls echo. There are servants, yes, but no equals. No partners. No family at his side.

H.W., now grown, chooses his own path. He declares independence. Daniel reacts not with pride but with contempt.

He calls him a bastard in a basket.

That cruelty reveals something profound: Daniel cannot tolerate autonomy in others. If he cannot control you, he diminishes you.

Control has replaced hope entirely.

And when control becomes the only lens through which you see the world, love has no oxygen.

Why this reframing matters

We have already examined Daniel through the lens of flaw. His competitiveness. His greed. His pride.

But seeing him as embodiment of corrupted idealism shifts the emphasis.

He is not simply a man with bad traits. He is a cautionary arc about how vision can decay.

That decay does not happen overnight.

It happens through choices that seem small at first.

A handshake refused. A partner humiliated. A son sent away.

By the time the damage is visible, it is irreversible.

I have watched this film multiple times, and each time I notice something new. A flicker in Daniel’s eyes when he speaks about family. A slight hesitation before he lashes out. A hint that he once believed something softer than what he now proclaims.

Those moments make the ending heavier.

Because we know what was possible.

The cost of conquest

There is a line Daniel says early on about building so he can get away from everyone.

That desire is the seed.

He wants independence. Freedom from dependence on others. Freedom from obligation. Freedom from vulnerability.

And he achieves it.

Absolute freedom.

Absolute solitude.

When hope curdles, it does not explode dramatically. It thickens. It sours quietly. It becomes something you cannot quite swallow but cannot spit out either.

Daniel ends the film surrounded by the spoils of victory.

And completely alone.

That is the corruption of idealism.

Not just moral failure.

Spiritual isolation.