The rules of punctuation seem arbitrary. How can they not, when an apostrophe looks like nothing in this world so much as a comma that can’t keep its feet on the ground? Or when, by simply placing next to that wafting comma its twin, one creates (of all things) a quotation mark? – Richard Lederer and John Shore, Comma Sense: A Fun-damental Guide to Punctuation

Linguists are no different from any other people who spend more than nineteen hours a day pondering the complexities of grammar and its relationship to practically everything else in order to prove that language is so inordinately complicated that it is impossible in principle for people to talk. – Ronald W. Langacker (b.1942), Language and Its Structure, 1973

Among the losses punctuation suffers through the decay of language is the slash mark or diagonal… – Theodor W. Adorno (1903–1969), “Punctuation Marks,” Notes to Literature, V