Batter my heart (Holy Sonnet 14)
by John Donne
Analysis: Brain Snacks
Brain Snacks: Tasty Tidbits of Knowledge
Donne was related to Sir Thomas More, the famous English author, scholar, and politician. (Source)
Phrases like, "death be not proud," "for whom the bell tolls," and "no man is an island" are all from Donne's work.