f statements just
| in so far as we happen, for the year or the moment, to be thinking of
| those statements in relation to the statements which can be reached from
| them by some set of transformations to which we have seen fit to direct our
| attention.  Now the notion of semantical rule is as sensible and meaningful as
| that of postulate, if conceived in a similarly relative spirit -- relative, this
| time, to one or another particular enterprise of schooling unconversant persons
| in sufficient conditi