Definition of quatrain:
This is apparent in a well- known quatrain from Goethe: " Who ne'er his bread in sorrow ate, Who ne'er the mournful midnight hours Weeping upon his bed has sate, He knows you not, ye heavenly Powers."- "Elementary Guide to Literary Criticism", F. V. N. Painter.
- "On Something", H. Belloc.
- "Promenades of an Impressionist", James Huneker.