Stone walls do not a prison make,Nor iron bars a cage;Minds innocent and quiet takeThat for an hermitage;If I have freedom in my love,And in my soul am free,Angels alone that soar above,Enjoy such liberty.
- Richard Lovelace (1618–1659). "To Althea, from Prison" (excerpt)
Note: Richard Lovelace is not related to Linda Lovelace, as far as we know.