William Shakespeare coined a number of phrases that we still use today, including (in varying forms) the following from Twelfth Night.
“If music be the food of love, play on.”
-Duke Orsino 1.1.1
“My purpose is, indeed a horse of that colour.”
“I am all the daughters of my father’s house and all the brothers too.”
“Still you keep o’ th’ windy side of law; good.”
“Be not afraid of greatness. Some are born great, some achieve greatness, and some have greatness thrust upon ’em.”
“Why, this is very midsummer madness.”