Geoffrey Nunberg (somewhere) makes the point that parentheses and quotations follow similar typographical, and, you could say syntactic rules: If you open a parentheses (with a lunula) you have to close it (with another, facing the opposite way). Likewise if you open a direct quotation (with raised...

Virginia Woolf eats two big meals in the first chapter A Room of One’s Own (1929). The first is just big. The second is big in its impact.