The trouble is that the expression 'material thing' is functioning already, from the very beginning, simply as a foil for 'sense-datum'; it is not here given, and is never given, any other role to play, and apart from this consideration it would surely never have occurred to anybody to try to represent as some single kind of things the things which the ordinary man says that he 'perceives.
J. L. AustinAre cans constitutionally iffy? Whenever, that is, we say that we can do something, or could do something, or could have done something, is there an if in the offing--suppressed, it may be, but due nevertheless to appear when we set out our sentence in full or when we give an explanation of its meaning?
J. L. AustinAfter all we speak of people 'taking refuge' in vagueness -the more precise you are, in general the more likely you are to be wrong, whereas you stand a good chance of not being wrong if you make it vague enough.
J. L. Austin