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5. Theory of Logic / L. Paradox / 6. Paradoxes in Language / c. Grelling's paradox

[problem with concepts which describe themselves]

2 ideas
A 'heterological' predicate can't be predicated of itself; so is 'heterological' heterological? Yes=no! [Russell]
If 'x is heterological' iff it does not apply to itself, then 'heterological' is heterological if it isn't heterological [Hale/Wright]