The term Quotations generally refer to the usage of expressions as part of other expressions, mostly when the quoted expressions are well-known or clearly cited to its original source. Quotations are also frequently printed as a means of inspiration and to invoke philosophical thoughts in the reader. Quotations are usually indicated by quotation marks. Quotations may also refer to the repeated use of pieces of any other form of expression, particularly parts of artistic works like elements of a painting, movie scenes or portions from a musical composition.