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 SapirCultural anthropology is not valuable because it uncovers the archaic in the psychological sense. It is valuable because it is constantly rediscovering the normal.
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 SapirA logical analysis of reflexive usages in French shows, however, that this simplicity is an illusion and that, so far from helping the foreigner, it is more calculated to bother him.
Edward Sapir