Only a lover notices the small things: the way the afternoon light catches the nape of a neck, or how a strand of hair slips out from behind an ear, or the way a finger curls around a cup. And no one scans a letter so closely as a lover, searching for its small print, straining to hear its nuances, its gasps, its sighs and hesitations, poring over the secret messages that lie in every cadence. The difference between “Jane (whom I adore)” and “Jane, whom I adore,” and the difference between them both and “Jane—whom I adore—” marks all the distance between ecstasy and heartache. “No iron can pierce the heart with such force as a period put at just the right place,” in Isaac Babel’s lovely words; a comma can let us hear a voice break, or a heart. Punctuation, in fact, is a labor of love. Which brings us back, in a way, to gods.
― Pico Iyer, In Praise of the Humble Comma, from Tropical Classical