“This rule is difficult to apply; it is frequently hard to decide whether a single word, such as however, or a brief phrase, is or is not parenthetic. If the interruption to the flow of the sentence is but slight, the writer may safely omit the commas. But whether the interruption be slight or considerable, he must never omit one comma and leave the other. Such punctuation as”

“3. Enclose parenthetic expressions between commas.”

“There is always a comma to check whether are we going to do the same mistake which we have done before?" But proble is that we never use this comma.”

“Thurber was asked by a correspondent: "Why did you have a comma in the sentence, 'After dinner, the men went into the living-room'?" And his answer was probably one of the loveliest things ever said about punctuation. "This particular comma," Thurber explained, "was Ross's way of giving the men time to push back their chairs and stand up.”

“But if someone had slowed him down, just slightly interrupted his course, maybe he could have gotten through that one nightmarish moment; maybe he would never get that close to it again.”

“April 6—Today, I learned, the comma, this is, a, comma (,) a period, with, a tail, Miss Kinnian, says its, importent, because, it makes writing, better, she said, somebody, could lose, a lot, of money, if a comma, isnt in, the right, place, I got, some money, that I, saved from, my job, and what, the foundation, pays me, but not, much and, I dont see how, a comma, keeps, you from, losing it, But, she says, everybody, uses commas, so Ill, use them, too,,,,April 7—I used the comma wrong. Its punctuation…Miss Kinnian says a period is punctuation too, and there are lots of other marks to learn. She said; You, got. to-mix?them!up: She showd? me” how, to mix! them; up, and now! I can. mix (up all? kinds of punctuation— in, my. writing! There” are lots, of rules; to learn? but. Im’ get’ting them in my head: One thing? I, like: about, Dear Miss Kinnian: (thats, the way? it goes; in a business letter (if I ever go! into business?) is that, she: always; gives me’ a reason” when—I ask. She”s a gen’ius! I wish? I could be smart-like-her; Punctuation, is? fun!”