Philosophy Is Dangerous
In 399 BC, the people of Athens voted to put a philosopher to death.
His name was Socrates. The official charges were impiety and corrupting the youth. The actual charge — the one that made democratic Athens nervous enough to convict him — was that he taught young men to question everything they had been told. Their religion. Their politics. Their parents. The city decided he was too dangerous to keep around.
So before we ask whether modern philosophy is dangerous, we should notice that the question is old. The first society in our tradition asked it about the first philosopher in our tradition.
This is the question I want to take seriously today: has philosophy killed too many people to keep around?
The Case Against
Open the body-count ledger and the entries are real:
• Marx → Lenin and Stalin: roughly 23 million and 30 million deaths
• Marx → Mao: estimates from 49 to 78 million
• Nietzsche → Hitler: twelve million in the camps, more in the war
• Sartre → Pol Pot: about 1.7 million
I want to be honest that the causal chains here are messier than the arrow notation suggests. However, the deeper truth survives: bad philosophy, even when poorly understood and selectively applied, has the power to organize mass killing in a way that bad cooking does not.
Tradition vs. Philosophy
Edmund Burke saw something like this coming in 1790, while the French Revolution was still in its early, hopeful phase. His Reflections on the Revolution in France warned that once you train people to question all inherited authority — religion, custom, the slow accumulated wisdom of a civilization — you don’t get clear-eyed reformers. You get Robespierre. You get a guillotine working on a schedule.
Alasdair MacIntyre updated this argument in After Virtue. His version: once Enlightenment philosophy detached morality from its embedded place in community and tradition, ethical reasoning became a free-floating game where almost anything could be argued for and against. That is a serious argument. I don’t think it’s right, but I want to say why.
The Response
First: the alternative this seems to recommend — keep people from questioning inherited authority — has its own body count, and it is enormous. The Aztec priests sacrificing children on the temple steps were not corrupted by Enlightenment skepticism. They were operating an inherited tradition exactly as their grandfathers had.
Second: if philosophy gets debited for Lenin, it gets credited for Locke. The same intellectual tradition that produced Marx produced the Declaration of Independence, the laws of armed conflict, the abolitionist movement, the case for universal human dignity, the entire architecture of modern human rights.
Third, the cure it recommends is the disease. The argument is itself a piece of philosophy. Burke and MacIntyre are not appealing to inherited authority to make their case against appealing to inherited authority. They are arguing. They are reasoning carefully and asking us to follow the reasoning. If they are right, we should listen to them; but if we should listen to them, then careful philosophical reasoning can in fact arrive at trustworthy conclusions about ethics and politics. Which is the thing the steelman claimed it couldn’t do.
Mill’s Move
This brings us to the question I want to leave you with: should we censor dangerous philosophers?
John Stuart Mill answered this in On Liberty, and his answer is still the one to beat. His argument runs roughly like this.
If a censored idea is false, suppressing it deprives the true idea of the chance to defeat it openly, and the true idea grows weak from lack of exercise. A doctrine that has never been seriously challenged is held as a dead dogma, not a living conviction. Believers who have never had to defend their belief don’t actually understand it.
If a censored idea is true, suppressing it deprives humanity of the truth.
If a censored idea is partly true and partly false — which is the usual case — suppressing it loses the partial truth and freezes the partial error in place.
Mill’s harm principle limits this: speech that directly incites imminent violence is a different category. But for philosophy, even bad philosophy, even philosophy that future tyrants will quote — Mill’s case is that suppression is worse than the disease.