The French language is said to be the chastest of languages. For my part, I believe it to be the most obscene. For it seems to me that the chasteness of a language consists not in the careful avoidance of indecent meanings but in not having them. In fact, to avoid them, one must think of them, and there is no language in which it is more difficult to speak purely, in every sense, than in French. The reader, always more clever at finding obscene meanings than the author is at keeping them out, is scandalized and shocked by everything. How could what passes through impure ears not be stained by them? A people with good morals, on the other hand, has appropriate terms for all things, and these terms are always decent because they are always used decently. It is impossible to imagine a language more modest than that of the Bible, precisely because there everything is said with naiveté. To render the same things immodest, it suffices to translate them into French.
Rousseau, Emile – Book IV