Where it sits
Nobody lives here. It's the wall arguments hit, not a room anyone furnishes.
Tell it apart
| Aspect | Solipsism | The problem of other minds |
|---|---|---|
| Is a | Position | Question |
| Anyone holds it | No | Everyone has it |
| Asks | Does anything else exist? | How would I know? |
| Status | Reductio | Live problem |
Same wound, different depth. The problem of other minds asks how you know others are conscious — a hard epistemological question with proposed answers. Solipsism is the collapse you get if the answer turns out to be 'you don't, and the question is empty'.
| Aspect | Solipsism | Narcissism |
|---|---|---|
| Field | Philosophy: epistemology, metaphysics | Everyday character judgement; psychology |
| Core idea | Only my mind is certain to exist | Excessive self-admiration |
| Other people are | Possibly not there at all | An audience |
| Name from | Latin solus 'alone' + ipse 'self' | Narcissus, from Greek myth |
Solipsism is a philosophical position about knowledge and existence: only your own mind can be known to exist. Narcissism is about character: admiring yourself too much, and in psychology a pattern marked by a strong need for admiration and little feel for other people's feelings. A solipsist doubts that other minds are there at all; a narcissist is very sure they are, and wants their attention. They blur only in the loose everyday sense of 'solipsistic', meaning self-absorbed.
What it doesn't mean
No major philosopher has ever actually defended solipsism. It functions as a reductio — the place an argument must not end up — though solipsistic reasoning lies implicit in many post-Cartesian philosophies without anyone actually defending it.
That's the loose sense, and it long predates the internet. The technical doctrine is that the only thing the word 'exists' can attach to, for me, is myself and my own mental states. It's a claim about what the word 'exists' can mean, not a personality flaw.
What it really means
Solipsism is the most famous philosophical position that essentially nobody has ever held.
No major philosopher has ever actually defended solipsism. It exists as a reductio — the place an argument is not allowed to end up. If your epistemology delivers you here, your epistemology has broken, and the history of modern philosophy is partly a history of people building escape routes.
Descartes constructed the trap and then needed God to get out of it: having doubted everything down to a single thinking thing, he could only rebuild the external world by first proving a benevolent deity who wouldn't systematically deceive him. Which is an expensive way to establish that your kitchen exists.
Wittgenstein went at it differently and, arguably, more decisively — not by proving other minds exist but by arguing the solipsist cannot say what they mean. If meaning requires a public practice, then a wholly private vocabulary never gets started, and the doctrine collapses before it can be stated.
The modern drift is worth flagging too: online, solipsistic now often just means self-absorbed. The actual doctrine is stranger and more precise: that the only thing the word exists can attach to, for me, is myself and my own mental states. Not that other people don't matter. That the sentence other people exist has nothing to attach to.
Solipsism in the Philosophy world explains why the view is so hard to refute and why almost no philosopher accepts it.
Where it comes from
Latin — alone
Latin — self
Literally 'alone-self-ism'. A modern Latinate manufacture, not a classical word — the Romans had no such term.
- 1641 onward
Descartes' method of doubt isolates a solitary consciousness, which then requires God's benevolence to escape back into a shared world.
- 20th century
Wittgenstein attacks it from the side of language, arguing that meaning is necessarily public — so a private, one-mind vocabulary cannot get off the ground.
In real life
- Late one night a student realises he can't prove that the people around him have minds at all — the doubt where solipsism begins.
- A philosopher builds an argument, sees that it would leave only her own mind certainly existing, and takes that as proof the argument went wrong somewhere.
- In the loose sense, a novel whose other characters exist only to reflect the narrator's feelings might be called solipsistic.
Questions
Q01Has anyone ever actually believed solipsism?
Essentially no — the standard scholarly statement is that no great philosopher has espoused it. It survives as the destination philosophers steer away from: Descartes needed God to escape it, Wittgenstein needed public language. Its role is as a failure condition for a theory of knowledge.
Q02How do you refute solipsism?
The classic move is Mill's argument from analogy: others have bodies like mine and show the outward signs I know are produced by feelings, so they likely have minds. Three weaknesses are usually noted — the conclusion can't be checked, it generalises from a single case, and the premise that 'I know from my own case' is itself questionable.
Q03What did Wittgenstein say about solipsism?
He attacked its coherence rather than its truth, by demonstrating that language is necessarily public. If meaning requires a shared practice, then a private vocabulary in which the solipsist could even state their position doesn't get off the ground — the doctrine can't be said, not just can't be proved.
Sources
- Solipsism — Internet Encyclopedia of Philosophy.
- Other Minds — Stanford Encyclopedia of Philosophy.
- solipsism (etymology) — Wiktionary.
- narcissism (noun), including the psychology sense — Oxford Learner's Dictionaries.