 The remark that Wittgenstein quotes here from “a manuscript of the Tractatus” did not survive into the final version, but its sentiment is clearly echoed in the related remark that there can: “never be surprises in logic” (6.1251). Wittgenstein is clear that in the Tractatus he had unwittingly proceeded as though there could be such a thing as a philosophical surprise or discovery. His idea that the true objects would be discovered through analysis, but are nonetheless not known a priori, is plausibly one instance of this mistake.