Our sentence, “I have this feeling while I'm writing”, is of the kind of the sentence, “I see this.” I don't mean the sentence when it is used to inform someone that I am looking at the object which I am pointing to, nor when it is used, as in   ), to convey to someone that I see a certain drawing in the way A and not in the way B. I mean the sentence, “I see this”, as it is sometimes contemplated by us when we are brooding over ce[t|r]tain philosophical problems. We are then, say, holding on to a particular visual impression by staring at some object, and we feel it is most natural to say to ourselves, “I see this”, though we know of no further use we can make of this sentence.