Knock on the door, and you shall have an answer! <br />Open the heavy walls to set me free, <br />And blow a horn to call me into the sunlight, <br />And startled then what a strange thing you shall see! <br />Nuns, murderers, and drunkards, saints and sinners, <br />Lover and dancing girl and sage and clown <br />Will laugh upon you, and you will find me nowhere… <br />I am a room, a house, a street, a town.<br /><br />Conrad Potter Aiken<br /><br />http://www.poemhunter.com/poem/knock-on-the-door/