Quotation of the day from Bryan Garner's Usage Tip of the Day:
There are the resources of grammar; I mean of phrasing, of sentence-structure, of the linking and integration of the units of grammatical form, of the provisions for expressing notions that dress the stage of daily experience — time, place, perspective, agency, possibility and so forth. My own students sometimes look askance when I speak of the 'resources' of grammar; because they think of grammar as a set of rules rather than as a box of tools. But for the writer it is a cabinet of resources; it is the great corpus of possible ways of putting things; and writers know in their bones, if not with their brains, that there is always an alternative.
Walter Nash, An Uncommon Tongue: The Uses and Resources of English 124 (1992).