The writer who neglects punctuation, or mispunctuates, is liable to be misunderstood for the want of merely a comma, it often occurs that an axiom appears a paradox, or that a sarcasm is converted into a sermonoid. – Edgar Allan Poe

Language, never forget, is more fashion than science, and matters of usage, spelling, and pronunciation tend to wander around like hemlines. – Bill Bryson, The Mother Tongue: English & How It Got That Way, 1990

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

From now on, ending a sentence with a preposition is something up with which I will not put. – Sir Winston Churchill