 The Tractatus provides us with arguments against the Russellian idea of someone else’s private object, the beetle in Bismarck’s box. It lets us see that any such beetle would have no role in language or thought, but it left unmolested the beetle in one’s own box. Russell’s conception of how we can think about things in the minds of others was subjected to a critique, but the Tractatus left unexamined a questionable conception of what it is for our words to be about things in our own minds. (p. 283)