Comma Within Single Quotes & Sayings

With the right hunch, you could read the inflection of an author's soul on a single comma, in one sentence, and from that one sentence seize the whole book, his life work. — Andre Aciman

Wow," said Fishy. "I don't think I heard a single full stop in there. You know, when you start talking entirely in comma splices, you're probably ready for a time-out and a tranquilizer. — Mira Grant

We are but a point, a single comma, and God is the literature of eternity. — Henry Ward Beecher

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 — William Strunk Jr.