Mooreâs paradox
(Pictured: We tie knots in our minds from our misunderstandings of language, according to Wittgenstein. He wanted âto shew the fly the way out of the fly-bottleâ: liberate us from cases like Mooreâs paradox by making language less ambiguous and more truth-apt.)
Named after G.E. Moore, Mooreâs paradox illustrates how it may be possible to make logically valid statements containing contradictory beliefs. To borrow Mooreâs own example, âIt is raining but I do not believe it is rainingâ: âP and I believe not-Pâ. Intuitively, this seems bizarre! How is that statement valid?!
Belief isnât a simple statement of facts. The paradox rests on there being a genuine belief about the world (itâs an epistemic paradox). It arises from your believing something in contradiction to what you just said.
Moore suggested that the solution is to say P isnât an assertion but an implication: itâs not contradictory to undermine only an implication. However, fellow analytic philosopher Ludwig Wittgenstein, who was greatly influenced by this paradox, offered a different take.
He blamed language in the first-person point of view for the source of Mooreâs paradox, which doesnât arise in the third person (âIt is raining but she does not believe it isâ) or past tense (âIt was raining but I did not believe it wasâ).
Wittgenstein thus called for clarification of the expression âI believeâ, arguing that it isnât intelligible: things are either true or theyâre not. In Philosophical Investigations he writes:
âHow did we ever come to use such an expression as âI believe . . . â? . . . Did we observe ourselves and other people and so discover belief?â
Hence âI believeâ is really just equivalent to âThis is the caseâ. Thus âPâ and âI believe not-Pâ are just two propositions of the same kind which do contradict each other, dispelling an unavoidable paradox.
Belief, true or false, is usually taken to be meaningful: itâs matched up against some kind of objectivity (e.g. through justification). This undermines Wittgensteinâs view that false beliefs arenât possible. But, when we lift all of our pride about it, can we say such objectivity exists? Wittgensteinâs own version of truth is âdeflationaryâ. For him, truth has no explicit meaning (e.g. itâs not verifiable). Rather, it is implicitly fixed to its own conditions for being true, making it superficial and expressive.
But isnât it radical for Wittgenstein to deny the meaning of âI believeâ? We mentally report on what we think to be true every day . . .
Either way, feel free to ignore Ludwigâs advice and commit Mooreâs paradox.
Will you?
You will and I believe you wonât.
















