 In the Tractatus Wittgenstein’s logical construction of a philosophical system has a purpose—to find the limits of world, thought, and language; in other words, to distinguish between sense and nonsense. “The book will … draw a limit to thinking, or rather—not to thinking, but to the expression of thoughts …. The limit can … only be drawn in language and what lies on the other side of the limit will be simply nonsense” (TLP Preface). The conditions for a proposition’s having sense have been explored and seen to rest on the possibility of representation or picturing. Names must have a bedeutung (reference/meaning), but they can only do so in the context of a proposition which is held together by logical form. It follows that only factual states of affairs which can be pictured can be represented by meaningful propositions. This means that what can be said are only propositions of natural science and leaves out of the realm of sense a daunting number of statements which are made and used in language.