"Perhaps blue, red, and yellow strike the mind more forcibly from there not being any great union between them, as martial music, which is intended to rouse the nobler passions."

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But surely, speaking carefully, we do not sense 'red' and 'blue' any more than 'resemblance' (or 'qualities' any more than 'relations'): we sense something of which we might say, if we wished to talk about it, that 'this is red.'

— J. L. Austin