In romantic literature, a work has organic form if the structure has originated from the materials and subjects used by the author. Using the organic metaphor, the structure is seen to grow as a plant.[1] It stands in contrast to a mechanical form, a work which has been produced in accordance with artificial rules. The lack of rules in Shakespeare's works led some critics to claim that they lacked form; Samuel Taylor Coleridge leapt to his defence with the concept of organic form.[2][3]