 contribute truths which become integral to the corpus of truths, the artificiality of their origin does not linger as a localized quality, but suffuses the corpus. If a subsequent expositor singles out those once legislatively postulated truths again as postulates, this signifies nothing… He could as well choose his postulates from elsewhere in the corpus, and will if he thinks it this serves his expository ends. (CLT, pp. 119–20)