Were a language ever completely "grammatical" it would be a perfect engine of conceptual expression. Unfortunately, or luckily, no language is tyrannically consistent. All grammars leak.
Edward SapirWe see and hear and otherwise experience very largely as we do because the language habits of our community predispose certain choices of interpretation.
Edward SapirIn a sense, every form of expression is imposed upon one by social factors, one's own language above all.
Edward SapirThe fact of the matter is that the 'real world' is to a large extent unconsciously built up on the language habits of the group.
Edward Sapir