In short
Gilbert Ryle shared Wittgenstein's view that philosophical problems come from misreading the grammar of our concepts, and in The Concept of Mind (1949) he applied it to the mind as an inner theatre. Where Wittgenstein worked case by case, Ryle built something close to a theory, which critics called logical behaviourism.
Gilbert Ryle (1900-1976) spent his whole career at Oxford, edited the journal Mind for almost a quarter of a century and wrote one of the most widely read philosophy books of the century, The Concept of Mind (1949). Its target is what Ryle called the "official doctrine": the idea, inherited from Descartes, that a person is a body plus a hidden inner theatre. Ryle's name for it stuck: the ghost in the machine.
What Ryle shared with Wittgenstein
Ryle met Wittgenstein around 1929 and the two became friends. Both thought that many philosophical problems come from being misled by the form of our language. Ryle's early paper "Systematically Misleading Expressions" (1932) already says so. His best-known tool is the category mistake. A visitor is shown the colleges, libraries and laboratories of Oxford and then asks: but where is the University? He has put the University in the wrong category, as if it were one more building. Talk of "the mind" as an extra thing behind behaviour, Ryle argued, makes the same mistake.
His distinction between knowing how and knowing that is close to the Philosophical Investigations, where understanding is treated as an ability rather than an inner state:
Die Grammatik des Wortes „wissen" ist offenbar eng verwandt der Grammatik der Worte „können", „imstande sein".
The grammar of the word "know" is evidently closely related to that of the words "can" and "be able to".
PI §150
A parallel path
Ryle never acknowledged Wittgenstein in The Concept of Mind, and how much he owed him is disputed. The Stanford Encyclopedia entry on Ryle argues that the two worked in parallel, possibly learning from each other, rather than Ryle simply following. Wittgenstein's ideas circulated at Oxford through the dictated Blue and Brown Books long before the Investigations appeared in 1953.
Where they differ
Ryle's book reads like a theory: confident, sweeping, with each mental term analysed as a disposition to behave in certain ways. Critics called it logical behaviourism. Wittgenstein anticipated that charge against himself and rejected it:
„Bist du nicht doch ein verkappter Behaviourist? Sagst du nicht doch, im Grunde, daß alles Fiktion ist, außer dem menschlichen Benehmen?"
"Are you not really a behaviourist in disguise? Aren't you really saying that everything except human behaviour is a fiction?"
PI §307
His answer is no. Pain is real; what he denies is that the word "pain" works as the name of a private object. Ryle offered Oxford a programme of "logical geography". Wittgenstein wanted no programme, only treatment for particular confusions.
Frequently asked questions
Was Gilbert Ryle a student of Wittgenstein?
No. Ryle was an Oxford philosopher with his own career who became Wittgenstein's friend around 1929. Their ideas developed in parallel, and scholars still argue about who learned what from whom.
What is the difference between Ryle and Wittgenstein on the mind?
Both reject the mind as a hidden inner theatre. Ryle replaced it with an account in terms of dispositions to behave, which looked like behaviourism. Wittgenstein refused any such theory and only described how psychological words are actually used.
Sources
wittgenstein.be, “Gilbert Ryle”, https://wittgenstein.be/en/philosophers/gilbert-ryle/ (2026-10-20)