Quotations are literary or rhetorical devices used to emphasize or explain a point. They're an economic form of expression, because they can reduce the amount of verbiage required to make a point. Quotations are sometimes considered either inappropriate or overdone. In some languages partial quotations create common idioms created by literature or media are accepted expressions. Some are effectively cliches, and are considered bad or incompetent usage in literature and arts.
Examples of Quotation:
|Cliche: Ask not for whom the bell tolls.|
Literary: A thousand slimy things lived on, and so did I
Idiom: To be, or not to be?