The fact that two ideas seem here inseparably bound up suggests to us that we are dealing with one idea only & not with two & that by a queer trick our language suggests a totally different strukture of grammar than the one actually used. For we have the sentence that only I can know directely my experience & only indirectely the experience of the other person. Thisus language suggests 4 possible com[p|b]inations but rules out 2. It is as though I had used the 4 letters
44a b c d to denote two objects only but by my notation somehow suggesting the pre that I am talking of 4.