English Grammar

English grammar is not like the rules of Euclidean geometry, fixed and immutable. Rather the purpose of grammar is to facilitate communication. Consistency of spelling, punctuation and grammar can generally facilitate this (and make it easier on proofreaders to catch errors). But if one can communicate more effectively, powerfully and artistically by breaking the rules, the good writer will do it.

-- Andy Le Peau, IVP editorial director, Andy Unedited blog, 06/18/2007