“So if I say ‘he has toothache’ I am supposing that he has what I have if I have toothache.” Suppose I said: “If I say ‘I suppose’ he has toothache, I am supposing that he has what I have if I have toothache”,— this would be like saying “If I say ‘this cushion is red’ I mean that it has the same colour which the sofa has if it is red”. But this wasn't what I intended| was meant to say with the first sentence. I wished to say that talking about his toothache at all was based upon a supposition, a supposition which by its very essence could not be verified.