What’s the difference between a cat and a comma?
One has claws at the end of its paws and one is a pause at the end of a clause.
“Children who hear acquire language without any particular effort; the words that fall from others’ lips they catch on the wing, as it were, delightedly, while the little deaf child must trap them by a slow and often painful process. But whatever the process, the result is wonderful. Gradually from naming an object we advance step by step until we have traversed the vast distance between our first stammered syllable and the sweep of thought in a line of Shakespeare.” —
Helen Keller (1880–1968)
From the first chapter of her autobiography The Story of My Life, ©1905.